US20100024990A1 - Lamination press pad - Google Patents
Lamination press pad Download PDFInfo
- Publication number
- US20100024990A1 US20100024990A1 US12/421,097 US42109709A US2010024990A1 US 20100024990 A1 US20100024990 A1 US 20100024990A1 US 42109709 A US42109709 A US 42109709A US 2010024990 A1 US2010024990 A1 US 2010024990A1
- Authority
- US
- United States
- Prior art keywords
- pad
- press pad
- press
- channels
- protrusions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/06—Platens or press rams
- B30B15/061—Cushion plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7841—Holding or clamping means for handling purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/81457—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
Definitions
- This invention relates in general to a lamination press pad, and more particularly, to a press pad that provides uniform pressure for bonding a substrate(s) into a radio frequency (RF) and/or intermediate frequency (IF) modules.
- RF radio frequency
- IF intermediate frequency
- an RF/IF module typically includes many electronic devices integrated into a single case to perform specific functions. These electronic devices utilize a variety of technologies from packaged devices to integrated circuits of substrates that will be populated with a plurality of components. As more and more sophisticated functions are desired for these IF/RF modules, more and more individual electronic devices are required and embedded into the case. Many of these modules require channelization to achieve signal isolation in the circuit. As the functional requirements increase so must the packaging density. Electronic devices shrink in size to accommodate more devices to increase the packaging density. Channels in the case also became narrower resulting in higher aspect ratio between the channel width and their depth or case sidewall height. This narrowing creates great difficulty for bonding the individual electronic devices into the channels.
- a method and a press pad are provided to resolve the difficulty of bonding the substrates into respective channels, particularly the channels with a high aspect ratio, of a case of a RF/IF module.
- these substrates are ceramic thin film.
- Other substrate technologies include ceramic thick film and printed circuit board.
- This method and press pad may be applied to other substrate technologies not listed herein.
- an adhesive film is placed and positioned on the bottom surface of the case floor, including in the channels.
- the substrates are then placed on the adhesive film in the case.
- press pads are used to apply pressure uniformly across the substrates. While under pressure the adhesive film is cured using heat.
- the width of the press pad conforms to the substrate outline, and the substrate is smaller than the width of the channel in the case. Therefore, the press pad can fit within the channel without direct contact with the sidewalls of the channel, so as to avoid the pressure loss caused by the friction between the pad and sidewall if the pad were to contact the sidewalls.
- the press pad becomes more flexible and often results in misalignment with the substrate due to lateral movement. When pressure is applied, this misalignment can cause pressure gradients across the substrate instead of uniform pressure. To avoid this misalignment and resulting pressure gradients, protrusions are formed on opposing edges of the press pad to align it in the channel. Therefore, when the press pad is moved in and out of the channel, the gap between the edges of the press pad and the channel is minimized, such that the lateral movement of the press pad such as slide or inclination is minimized.
- the press pads and the protrusions have a height higher than the depth of the channels, such that the user can easily place and remove the press pads in and out of the case and its channels.
- the protrusions include a pair of semi-cylindrical bumps extending from center axes of the edges of the press pad wherever they are needed to restrict the lateral movement and aid in the alignment to the substrate.
- the protrusions can also be in the form of two symmetric fingers extending from the center axes of the opposing edges of the press pad.
- the protrusions are rigid enough to resist lateral pressure applied thereto, so as to avoid deformation caused by the lateral pressure.
- the substrates are bonded with the adhesive films in the case, components such as chips or other electronic components are glued or attached to the substrates.
- FIG. 1 shows an example case of a RF/IF module that includes some channels
- FIG. 2 shows a cross-sectional perspective view of the case
- FIG. 3 shows cross-sectional views of the applications of press pads in various configurations
- FIG. 4 shows a perceptive view of a press pad having a pair of protrusions
- FIG. 5 shows a cross-section view of the press pad as shown in FIG. 4 ;
- FIG. 6 shows a top view of the press pad as shown in FIG. 5 ;
- FIG. 7 shows a perspective view of another embodiment of a press pad having a pair of protrusions
- FIG. 8 shows a top view of the press pad as shown in FIG. 7 .
- a RF and/or IF module that comprises a case 10 is provided.
- the case 10 includes several channels 12 for isolating a plurality of electronic devices therein.
- the case is preferably a metallic case, for example.
- the electronic devices are preferably in the form of integrated circuits, that is, each of the electronic devices includes a substrate 16 on which a plurality of electronic components is mounted. The substrates 16 are bonded to bottom surfaces of each channel 12 .
- an adhesive film 14 is placed on the bottom surface of the case floor including in the channels 12 for bonding the substrates 16 within the channels 12 .
- the adhesive film 14 is a thin film fabricated from epoxy, for example.
- Heat and pressure are two major processes to properly bond the substrates 16 with the adhesive films 14 in the respective channels 12 .
- Heat is used to cure the adhesive films 14 , while pressure promotes wetting of the surfaces of the adhesive films 14 on the case 10 and the substrates 16 during cure.
- the press pads 18 are used to transfer external pressure to the interface between the substrates 16 and the adhesive films 14 and between the adhesive film 14 and case 10 .
- the pressure sources may include weight, spring mechanisms, or a lamination source applied to the top surface of the pressure pads 18 .
- the press pads 18 are fabricated from polymer such as silicone, for example.
- the outline or size of the press pad 18 is preferably the same as the substrate 16 outlines.
- the substrates 16 have a width smaller than the channel 12 . Therefore, the width of the press pads 18 is also smaller than that of the channels 12 to result in a larger lateral extent or gap between the edges of the press pads 18 and the sidewalls of the case channels.
- the press pads 18 are used to transfer external pressure to the interfaces, the larger lateral extent often results in misalignment between the press pads 18 and the substrates 16 as shown in FIG. 3 b.
- the external pressure is applied normal to the top surface of the press pads 18 , inclination of the press pads 18 may occur.
- the misalignment and inclination of the press pads 18 cause the external pressure to be non-uniformly applied to the interface between the substrate 16 , adhesive films 14 , and case 10 interfaces, so as to create a pressure gradient across the interfaces.
- the press pads 18 have to be made taller and skinner.
- the taller or skinner configuration makes press pads 18 easily bent, flexed or deformed as shown in FIG. 3 a.
- the inclination and deformation of press pads 18 both may cause a contact between the sidewalls of the channels 12 and the press pads 18 . When the contact area is large, a significant portion of the external pressure is diverted into friction between the sidewalls and the press pads 18 .
- the insufficient pressure often results in non-uniform pressure and poor wetting of the adhesive films 14 to the substrates 16 and case 10 , such that the bond strength of between the adhesive films 14 and the substrates 16 is weakened or the grounding of the substrate is varied from the build intent.
- a pair of symmetric protrusions 20 is formed on two opposing edges of the press pads 18 .
- Many configurations can be applied for forming the protrusions 20 .
- the protrusions 20 are in the form of a pair of semi-circular bumps protruding from center axes of the opposing edges of the press pad 18 .
- the maximum width of the press pad 18 is thus the width of the press pads 18 plus the radii of the protrusions 20 .
- each of the protrusions 20 may includes discrete protrusion segments along the center axes of the surfaces to further reduce the contact to the sidewalls of the channel 12 .
- FIGS. 7 and 8 show another embodiment of the protrusions 20 .
- the protrusions 20 in the form of a pair of fins extend along a center axes of the opposing edges of the press pad 18 .
- the total lateral width is thus the width of the press pad plus the length of both fins 20 . Therefore, the gap between the press pad 18 with the fins 20 and the sidewall of the channel 12 is reduced, and the possibility of misalignment between the press pad 18 and the substrate 16 and inclination of the press pad 18 is reduced.
- the fins 20 are formed of material operative to resist lateral pressure, the press pad 18 is thus protected from being deformed by lateral pressure applied thereto.
- the fins 20 are made with very thin thickness, such that when contact between the press pad 18 and the channel 12 sidewalls is unavoidable, friction is minimized by the very thin structure of the fins 20 .
- This disclosure provides exemplary embodiments of a lamination press pad.
- the scope of this disclosure is not limited by these exemplary embodiments. Numerous variations, whether explicitly provided for by the specification or implied by the specification, such as variations in shape, structure, dimension, type of material or manufacturing process may be implemented by one of skill in the art in view of this disclosure.
Abstract
A press pad for bonding substrates into a radio-frequency and/or intermediate-frequency module. The module has a plurality of channels, each of which has an adhesive film for bonding the substrate. The press pad has a pad body conformal to the substrate and pairs of lateral protrusions extending from central axes of opposing surfaces of the pad body. The protrusions are in the forms of semicircular bumps or fins extending perpendicular to the opposing surfaces. Therefore, the lateral extent of the press pad within the channel is minimized, such that the misalignment and inclination of the press pad is minimized. Further, the lateral protrusions are fabricated from material operative to resist lateral pressure, such that deformation of the press pad caused by lateral pressure is also prevented. Therefore, pressure gradient and pressure loss are prevented.
Description
- Not Applicable
- Not Applicable
- This invention relates in general to a lamination press pad, and more particularly, to a press pad that provides uniform pressure for bonding a substrate(s) into a radio frequency (RF) and/or intermediate frequency (IF) modules.
- In the electronic manufacturing industry, an RF/IF module typically includes many electronic devices integrated into a single case to perform specific functions. These electronic devices utilize a variety of technologies from packaged devices to integrated circuits of substrates that will be populated with a plurality of components. As more and more sophisticated functions are desired for these IF/RF modules, more and more individual electronic devices are required and embedded into the case. Many of these modules require channelization to achieve signal isolation in the circuit. As the functional requirements increase so must the packaging density. Electronic devices shrink in size to accommodate more devices to increase the packaging density. Channels in the case also became narrower resulting in higher aspect ratio between the channel width and their depth or case sidewall height. This narrowing creates great difficulty for bonding the individual electronic devices into the channels.
- A method and a press pad are provided to resolve the difficulty of bonding the substrates into respective channels, particularly the channels with a high aspect ratio, of a case of a RF/IF module. Typically, these substrates are ceramic thin film. Other substrate technologies include ceramic thick film and printed circuit board. This method and press pad may be applied to other substrate technologies not listed herein. To bond the substrates into the respective channels of the case, an adhesive film is placed and positioned on the bottom surface of the case floor, including in the channels. The substrates are then placed on the adhesive film in the case. To obtain good wetting of the adhesive film to both the case and substrates, press pads are used to apply pressure uniformly across the substrates. While under pressure the adhesive film is cured using heat. Preferably, the width of the press pad conforms to the substrate outline, and the substrate is smaller than the width of the channel in the case. Therefore, the press pad can fit within the channel without direct contact with the sidewalls of the channel, so as to avoid the pressure loss caused by the friction between the pad and sidewall if the pad were to contact the sidewalls. However, as the width of press pad narrows to fit in the channel, the press pad becomes more flexible and often results in misalignment with the substrate due to lateral movement. When pressure is applied, this misalignment can cause pressure gradients across the substrate instead of uniform pressure. To avoid this misalignment and resulting pressure gradients, protrusions are formed on opposing edges of the press pad to align it in the channel. Therefore, when the press pad is moved in and out of the channel, the gap between the edges of the press pad and the channel is minimized, such that the lateral movement of the press pad such as slide or inclination is minimized.
- Preferably, the press pads and the protrusions have a height higher than the depth of the channels, such that the user can easily place and remove the press pads in and out of the case and its channels. In one embodiment, the protrusions include a pair of semi-cylindrical bumps extending from center axes of the edges of the press pad wherever they are needed to restrict the lateral movement and aid in the alignment to the substrate. The protrusions can also be in the form of two symmetric fingers extending from the center axes of the opposing edges of the press pad. The protrusions are rigid enough to resist lateral pressure applied thereto, so as to avoid deformation caused by the lateral pressure.
- After the substrates are bonded with the adhesive films in the case, components such as chips or other electronic components are glued or attached to the substrates.
- These as well as other features of the present invention will become more apparent upon reference to the drawings therein. The particulars shown herein are by way of example and for purposes of illustrative discussion of the embodiments of the present invention only and are presented in the cause of providing what is believed to be the most useful and readily understood description of the principles and conceptual aspects of the current invention. In this regard, no attempt is made to show the present invention in more detail than is necessary for the fundamental understanding of the present invention, the description taken with the drawings making apparent to those skilled in the art how the several forms of the present invention may be embodied in practice.
-
FIG. 1 shows an example case of a RF/IF module that includes some channels; -
FIG. 2 shows a cross-sectional perspective view of the case; -
FIG. 3 shows cross-sectional views of the applications of press pads in various configurations; -
FIG. 4 shows a perceptive view of a press pad having a pair of protrusions; -
FIG. 5 shows a cross-section view of the press pad as shown inFIG. 4 ; -
FIG. 6 shows a top view of the press pad as shown inFIG. 5 ; -
FIG. 7 shows a perspective view of another embodiment of a press pad having a pair of protrusions; and -
FIG. 8 shows a top view of the press pad as shown inFIG. 7 . - As shown in
FIG. 1 , a RF and/or IF module that comprises acase 10 is provided. Thecase 10 includesseveral channels 12 for isolating a plurality of electronic devices therein. The case is preferably a metallic case, for example. The electronic devices are preferably in the form of integrated circuits, that is, each of the electronic devices includes asubstrate 16 on which a plurality of electronic components is mounted. Thesubstrates 16 are bonded to bottom surfaces of eachchannel 12. As shown inFIG. 2 , anadhesive film 14 is placed on the bottom surface of the case floor including in thechannels 12 for bonding thesubstrates 16 within thechannels 12. Theadhesive film 14 is a thin film fabricated from epoxy, for example. - Heat and pressure are two major processes to properly bond the
substrates 16 with theadhesive films 14 in therespective channels 12. Heat is used to cure theadhesive films 14, while pressure promotes wetting of the surfaces of theadhesive films 14 on thecase 10 and thesubstrates 16 during cure. In this embodiment, thepress pads 18 are used to transfer external pressure to the interface between thesubstrates 16 and theadhesive films 14 and between theadhesive film 14 andcase 10. The pressure sources may include weight, spring mechanisms, or a lamination source applied to the top surface of thepressure pads 18. Preferably, thepress pads 18 are fabricated from polymer such as silicone, for example. - To provide uniform pressure on the two aforementioned interfaces, the outline or size of the
press pad 18 is preferably the same as thesubstrate 16 outlines. To allow thesubstrates 16 to be placed in thechannels 12, thesubstrates 16 have a width smaller than thechannel 12. Therefore, the width of thepress pads 18 is also smaller than that of thechannels 12 to result in a larger lateral extent or gap between the edges of thepress pads 18 and the sidewalls of the case channels. When thepress pads 18 are used to transfer external pressure to the interfaces, the larger lateral extent often results in misalignment between thepress pads 18 and thesubstrates 16 as shown inFIG. 3 b. When the external pressure is applied normal to the top surface of thepress pads 18, inclination of thepress pads 18 may occur. The misalignment and inclination of thepress pads 18 cause the external pressure to be non-uniformly applied to the interface between thesubstrate 16,adhesive films 14, andcase 10 interfaces, so as to create a pressure gradient across the interfaces. When thechannels 12 become deeper, that is, have a higher aspect ratio, thepress pads 18 have to be made taller and skinner. The taller or skinner configuration makespress pads 18 easily bent, flexed or deformed as shown inFIG. 3 a. The inclination and deformation ofpress pads 18 both may cause a contact between the sidewalls of thechannels 12 and thepress pads 18. When the contact area is large, a significant portion of the external pressure is diverted into friction between the sidewalls and thepress pads 18. The insufficient pressure often results in non-uniform pressure and poor wetting of theadhesive films 14 to thesubstrates 16 andcase 10, such that the bond strength of between theadhesive films 14 and thesubstrates 16 is weakened or the grounding of the substrate is varied from the build intent. - To minimize the lateral extent of the
press pads 18 within thechannels 12, in this embodiment, a pair ofsymmetric protrusions 20 is formed on two opposing edges of thepress pads 18. Many configurations can be applied for forming theprotrusions 20. For example, as shown inFIGS. 4 to 6 , theprotrusions 20 are in the form of a pair of semi-circular bumps protruding from center axes of the opposing edges of thepress pad 18. The maximum width of thepress pad 18 is thus the width of thepress pads 18 plus the radii of theprotrusions 20. Therefore, when thepress pad 18 is inserted into thechannel 12, the gap between thepress pads 18 and the sidewalls of thechannels 12 is narrowed, and the possibility of misalignment and inclination is thus lowered. Further, as theprotrusions 20 are formed with a semi-circular configuration, the periphery of eachprotrusion 20 only has a single line contact with the sidewall of thechannels 12. Therefore, in this embodiment that theprotrusions 20 extend from the bottom surface to the top surface of thepress pad 18. It will be appreciated that each of theprotrusions 20 may includes discrete protrusion segments along the center axes of the surfaces to further reduce the contact to the sidewalls of thechannel 12. -
FIGS. 7 and 8 show another embodiment of theprotrusions 20. As shown, theprotrusions 20 in the form of a pair of fins extend along a center axes of the opposing edges of thepress pad 18. The total lateral width is thus the width of the press pad plus the length of bothfins 20. Therefore, the gap between thepress pad 18 with thefins 20 and the sidewall of thechannel 12 is reduced, and the possibility of misalignment between thepress pad 18 and thesubstrate 16 and inclination of thepress pad 18 is reduced. Further, as thefins 20 are formed of material operative to resist lateral pressure, thepress pad 18 is thus protected from being deformed by lateral pressure applied thereto. Further, thefins 20 are made with very thin thickness, such that when contact between thepress pad 18 and thechannel 12 sidewalls is unavoidable, friction is minimized by the very thin structure of thefins 20. - When the
substrates 16 have been bonded with theadhesive films 14 by means of heat and external pressure transferred by thepress pad 18 as described, electronic components can then be glued or attached torespective substrates 16 within thechannels 12. Thereby, a high-performance RF and/or IF module can be obtained. - This disclosure provides exemplary embodiments of a lamination press pad. The scope of this disclosure is not limited by these exemplary embodiments. Numerous variations, whether explicitly provided for by the specification or implied by the specification, such as variations in shape, structure, dimension, type of material or manufacturing process may be implemented by one of skill in the art in view of this disclosure.
Claims (25)
1. A press pad for bonding a substrate into a case of a radio- and intermediate-frequency module, a radio-frequency module, or an intermediate frequency module, comprising:
an elongate pad body having a cross section conformal to the substrate; and
a pair of protrusions extending from two opposing edges of the pad body.
2. The press pad of claim 1 , wherein the case includes a plurality of channels therein.
3. The press pad of claim 2 , wherein the press pad has a height higher than a depth of the channels.
4. The press pad of claim 2 , wherein the case comprising at least one adhesive film placed in the channels.
5. The press pad of claim 2 , wherein the protrusions provide line contact to sidewalls of the channels.
6. The press pad of claim 1 , wherein the protrusions include fins protruding from central axes of the opposing surfaces of the pad body.
7. The press pad of claim 1 , wherein the protrusions include semicircular bumps protruding from central axes of the opposing surfaces of the pad body.
8. The press pad of claim 1 , wherein the pad body is fabricated from polymer.
9. The press pad of claim 1 , wherein the pad body is fabricated from silicone.
10. The press pad of claim 1 , wherein the pad body and the protrusions are integrally formed.
11. A lamination system for bonding substrates into a plurality of channels of a case, comprising:
one or a plurality of adhesive films placed in the channels on a floor of the case;
a plurality of substrates to be bonded with the adhesive films within the channels;
a pressure source to provide an external pressure to interfaces between the substrates, the adhesive films, and the case floor;
at least one press pad to transfer the external pressure to the interfaces, wherein the press pad includes:
a pad body having a cross section substantially conformal to the corresponding substrates;
a pair of protrusions laterally protruding from the pad body; and
a heat source for curing the adhesive films.
12. The system of claim 11 , wherein the pressure source includes a lamination source.
13. The system of claim 11 , wherein the pressure source includes a weight applied to a top surface of the press pad.
14. The system of claim 11 , wherein the pressure source includes a spring mechanism applied to a top surface of the press pad.
15. The system of claim 11 , wherein the protrusions have a semi-circular cross section.
16. The system of claim 11 , wherein the protrusions include fins extending perpendicular to the opposing surfaces of the pad body.
17. (canceled)
18. (canceled)
19. (canceled)
20. (canceled)
21. (canceled)
22. (canceled)
23. (canceled)
24. (canceled)
25. (canceled)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US12/421,097 US20100024990A1 (en) | 2005-11-15 | 2009-04-09 | Lamination press pad |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/274,848 US7534320B2 (en) | 2005-11-15 | 2005-11-15 | Lamination press pad |
US12/421,097 US20100024990A1 (en) | 2005-11-15 | 2009-04-09 | Lamination press pad |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/274,848 Division US7534320B2 (en) | 2005-11-15 | 2005-11-15 | Lamination press pad |
Publications (1)
Publication Number | Publication Date |
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US20100024990A1 true US20100024990A1 (en) | 2010-02-04 |
Family
ID=38039526
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US11/274,848 Active 2027-04-18 US7534320B2 (en) | 2005-11-15 | 2005-11-15 | Lamination press pad |
US12/421,097 Abandoned US20100024990A1 (en) | 2005-11-15 | 2009-04-09 | Lamination press pad |
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US11/274,848 Active 2027-04-18 US7534320B2 (en) | 2005-11-15 | 2005-11-15 | Lamination press pad |
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Also Published As
Publication number | Publication date |
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US7534320B2 (en) | 2009-05-19 |
US20070107838A1 (en) | 2007-05-17 |
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Owner name: NORTHROP GRUMMAN SYSTEMS CORPORATION, CALIFORNIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NORTHROP GRUMMAN CORPORATION;REEL/FRAME:025597/0505 Effective date: 20110104 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |