WO1997005481A1 - On demand useful life indicator - Google Patents
On demand useful life indicator Download PDFInfo
- Publication number
- WO1997005481A1 WO1997005481A1 PCT/US1996/012103 US9612103W WO9705481A1 WO 1997005481 A1 WO1997005481 A1 WO 1997005481A1 US 9612103 W US9612103 W US 9612103W WO 9705481 A1 WO9705481 A1 WO 9705481A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- indicator
- ambient fluid
- layer
- recited
- adhesive layer
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/26—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving oxidoreductase
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
- G01N31/223—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators for investigating presence of specific gases or aerosols
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
- G01N31/223—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators for investigating presence of specific gases or aerosols
- G01N31/225—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators for investigating presence of specific gases or aerosols for oxygen, e.g. including dissolved oxygen
Definitions
- this invention is believed to be found in the general class entitled SIGNALS AND INDICATORS and more particularly to those subclasses pertaining to those that are CHEMICALLY ACTIVATED. DESCRIPTION OF RELATED ART
- the present invention provides a structure that allow at least one of its indicating portions to remain dormant from the time of manufacture until the time of activation. After activation, the present invention provides an indication means that is activated by a component of an ambient fluid. This present invention also includes a membrane member which protects the indicator material.
- an on demand usable life indicator comprising: a base member, an indicator material, an adhesive layer, and co-layered cover member.
- the base member is impermeable to a selected ambient fluid.
- the indicator material is applied to one side of the base member in a predetermined pattern.
- the indicator material has a selected composition for providing a visual indication when exposed to a predetermined component of an ambient fluid for a predetermined period of time.
- the adhesive layer is applied with a predetermined pattem over the exposed side of the indicator material.
- the adhesive layer has impermeable properties with respect to said ambient fluid.
- the predetermined pattern being configured for providing exposure of at least one selected portion of the indicator material to the ambient fluid.
- the co-layered layered cover member covers the adhesive layer.
- One of the layers being impermeable to the selected ambient fluid for isolating said indicator material from the ambient fluid.
- a second layer being permeable to the selected ambient fluid.
- the second layer is adhered to the adhesive layer for providing a membrane between the ambient fluid and the indicator material.
- the first layer is selectably removable from said second layer for exposing the selected portion of the indicating layer to the selected ambient fluid.
- FIG. 1 represents a cross-sectional view of an on demand useful life indicator of the present invention.
- various details are identified by specific names for convenience. These names are intended to be generic in their application while differentiating between the various details.
- the corresponding reference numbers refer to like members throughout the several figures of the drawing.
- the drawing accompanying and forming a part of this specification disclose details of construction for the sole purpose of explanation. It is to be understood that structural details may be modified without departing from the concept and principles of the claimed invention. This invention may be incorporated into other structural forms than those that are shown. DETAILED DESCRIPTION OF THE INVENTION
- That usable life indicator 10 includes a base member 12, an indicator material layer 14; an adhesive layer 16 ; and a co-layered cover member 18.
- the base member 12 is preferably made of a material that is impermeable to a selected ambient fluid.
- the ambient fluid may be either a gas or a liquid.
- the base member 12 may be made of a material that is impervious to gas and liquid.
- This base member 12 may be a flexible thermoplastic material or a metallic foil that is applied as a self-adhesive label.
- the indicator material layer 14 is applied onto one side of the base material. Printing the indicator material 14 in a selected pattern is among the methods of application.
- the indicator material should have a selected composition. This selected composition will provide a visual indication when exposed to a selected component of an ambient fluid for a selected period of time. This indication may be a change of color or a change from a visual color to a lack of color. It may be necessary to apply this indicator material in a controlled or inert atmosphere such as Nitrogen. The selected component should be absent from the controlled atmosphere for avoiding a false indication. It may be necessary to cure or dry the indicator layer to a preferred state. After the indicator material layer 14 is brought to a preferred cured condition, the adhesive layer 16 is applied thereon and thereover.
- the adhesive layer may be applied in a selected pattern by a processes such as printing; coating; or laminating.
- the adhesive layer is composed of a material that is impermeable to the selected component of the ambient fluid. Any voids in the adhesive layer will allow the selected component in the ambient fluid to come in contact with the indicator layer.
- This adhesive layer may be pressure sensitive; heat activated; or contact type.
- a co-layered cover member 18 is applied over the adhesive layer 16.
- This co- layered cover member 18 includes at least two layers.
- the outer layer 20 is impermeable to the selected component of the ambient fluid.
- the inner layer 22, contacting the adhesive layer, is impermeable to the selected component of the ambient fluid.
- the inner layer 22 has a greater adhesion to the adhesive layer 16 than to the outer layer 20. This allows the outer layer to be selectively removed without removal of the inner layer 22. Removal of the outer layer 20 allows a selected component of the ambient fluid to permeate through inner layer 22 and any voids in the adhesive layer 16.
- the rate of change of the visual indication of the indicator material layer 14 may be controlled by its composition or by controlling the permeability of the inner layer 22.
- the inner layer 22 also acts as a membrane for protecting the surface of the adhesive layer 16 and the indicator material layer 14 from abrasion.
- One Example of co-layered material is TechnimagicTM which is produced by Technicote.
- the usable life indicator 10 has a relatively long shelf life when the outer layer and the base member are not punctured. It is only when the outer layer 20 is removed that the timing of the period for a selected useful life begins.
- composition of the adhesive layer 16 may be formulated to include the selected component of the ambient fluid. This type of formulation would provide a perceptible change to the indicator material 14 directly in contact with the adhesive layer 16. This arrangement would provide a self-contained norm for judging the degree of color or lack of color.
- a useable life indicator includes an indicator material layer 14 that is sensitive to an acid or a base component of the ambient fluid.
- the indicator material 14 may be formulated with litmus like properties. Some examples of materials having litmus properties are Phenolphthalein, Phenolsulfonethalein and the like.
- a second example of a useable life indicator includes an indicator material layer
- the indicator material 14 that is sensitive to carbon dioxide as the active component of the ambient fluid.
- the indicator material 14 may be formulated with Oxidation/Reduction properties.
- One example of those materials that change properties when exposed to carbon dioxide is Thymolphthalein, but not limited thereto.
- a third example of a useable life indicator includes an indicator material layer 14 that is sensitive to oxygen as the active component of the ambient fluid.
- the indicator material 14 may be formulated with Oxidation/ Reduction properties.
- One example of those materials that change properties when exposed to oxygen is Methyl Orange, but not limited thereto.
- a fourth example of a useable life indicator includes an indicator material layer
- the indicator material 14 that is sensitive to ozone as the active component of the ambient fluid.
- the indicator material 14 may be formulated with Oxidation/ Reduction properties.
- Oxidation/ Reduction properties One example of those materials that change properties when exposed to ozone is Crystal Violet, but not limited thereto.
- a fifth example of a useable life indicator includes an indicator material layer 14 that is sensitive to chlorine as the active component of the ambient fluid.
- material 14 may be formulated with Oxidation/ Reduction properties.
- Oxidation/ Reduction properties One example of those materials that change properties when exposed to chlorine is Metacresol Purple, but not limited thereto.
- a sixth example of a useable life indicator includes an indicator material layer 14 that is sensitive to carbon monoxide as the active component of the ambient fluid.
- the indicator material 14 may be formulated with Oxidation/ Reduction properties.
- One example of those materials that change properties when exposed to carbon monoxide is Alizarin Yellow, but not limited thereto.
- the adhesive layer in any or all of the examples mentioned above may be formulated with the component of the ambient fluid to provide the norm as described above.
- the color or visual indication of that area of the indicator material 14 not in contact with the adhesive would remain as applied until the outer layer 20 is removed.
- the area of the indicator material 14 in direct contact with the adhesive layer 16 would change to the color or visual indication that is to be used as a norm.
- Directional terms such as “upper”, “lower”, “inner”, “outer” and the like may have been used in the description. These terms are applicable to the embodiments shown and described in conjunction with the drawings. These terms are merely used for the purpose of description in connection with the drawings and do not necessarily apply to the position in which the present invention may be used.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002226653A CA2226653C (en) | 1995-07-25 | 1996-07-18 | On demand useful life indicator |
DE19681506T DE19681506T1 (en) | 1995-07-25 | 1996-07-18 | Indicator with selectable start of useful life |
GB9727286A GB2317695B (en) | 1995-07-25 | 1996-07-18 | Useful life indicator |
AU65934/96A AU6593496A (en) | 1995-07-25 | 1996-07-18 | On demand useful life indicator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/506,334 | 1995-07-25 | ||
US08/506,334 US5630372A (en) | 1995-07-25 | 1995-07-25 | On demand useful life indicator |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997005481A1 true WO1997005481A1 (en) | 1997-02-13 |
Family
ID=24014178
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1996/012103 WO1997005481A1 (en) | 1995-07-25 | 1996-07-18 | On demand useful life indicator |
Country Status (6)
Country | Link |
---|---|
US (1) | US5630372A (en) |
AU (1) | AU6593496A (en) |
CA (1) | CA2226653C (en) |
DE (1) | DE19681506T1 (en) |
GB (1) | GB2317695B (en) |
WO (1) | WO1997005481A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998052035A1 (en) * | 1997-05-12 | 1998-11-19 | Minnesota Mining And Manufacturing Company | Time indicator based on carbon dioxide production |
WO1999030148A1 (en) * | 1997-12-05 | 1999-06-17 | Crown Cork & Seal Technologies Corporation | Shelf life indicator |
DE19830572C1 (en) * | 1997-03-13 | 2000-03-16 | Joseph W Ramsey | Chemically activated timing indicator for warranty purpose of objects |
EP2904385A1 (en) * | 2012-10-03 | 2015-08-12 | Insignia Technologies Ltd. | Indicator device |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6536370B2 (en) * | 1998-11-25 | 2003-03-25 | Advanced Micro Devices, Inc. | Elapsed time indicator for controlled environments and method of use |
GB2347350B (en) * | 1999-02-27 | 2000-11-01 | Reckitt & Colmann Prod Ltd | A method for indicating the useful life of a volatile agent |
AU2001275964A1 (en) * | 2000-07-19 | 2002-01-30 | Ira Schwartz | Expiration date system |
US7185601B2 (en) * | 2001-03-01 | 2007-03-06 | Micron Technology, Inc. | Chemically sensitive warning apparatus and method |
US7808861B2 (en) * | 2001-07-17 | 2010-10-05 | Abraham Wien | Expiration date system |
US20030235119A1 (en) * | 2001-07-17 | 2003-12-25 | Abraham Wien | Expiration date system |
US7071783B2 (en) * | 2002-07-19 | 2006-07-04 | Micro Mobio Corporation | Temperature-compensated power sensing circuit for power amplifiers |
US7434535B2 (en) * | 2003-12-31 | 2008-10-14 | Church & Dwight Co., Inc. | Timing device |
JP2008510987A (en) * | 2004-08-24 | 2008-04-10 | スカイラド エルティーディー. | Temperature sensing product indicating device |
US20120032117A1 (en) | 2005-04-29 | 2012-02-09 | Ambrozy Rel S | Stimulus indicating device employing polymer gels |
US7940605B2 (en) * | 2005-04-29 | 2011-05-10 | Prasidiux, Llc | Stimulus indicating device employing polymer gels |
US8166906B2 (en) | 2005-04-29 | 2012-05-01 | Ambrozy Rel S | Stimulus indicating device employing polymer gels |
EP1877761A4 (en) * | 2005-04-29 | 2010-03-24 | Rel S Ambrozy | Stimulus indication employing polymer gels |
US8077554B2 (en) | 2005-04-29 | 2011-12-13 | Ambrozy Rel S | Stimulus indicating device employing polymer gels |
US9182292B2 (en) | 2005-04-29 | 2015-11-10 | Prasidiux, Llc | Stimulus indicating device employing polymer gels |
US20060260533A1 (en) * | 2005-05-19 | 2006-11-23 | Thomas Parias | Expiration warning patch for gas expiration date management |
MX2009009601A (en) * | 2007-03-09 | 2009-10-19 | S & C Electric Co | Wear indicator for a circuit interrupter exhaust control device. |
JP2010045140A (en) * | 2008-08-11 | 2010-02-25 | Nec Electronics Corp | Lead frame, method of manufacturing the same, and method of manufacturing semiconductor device |
NL1038939C2 (en) * | 2011-07-12 | 2013-01-15 | Innovation Desk | DEVICE FOR INDICATING AN EXPIRED TIME PERIOD AND ITS USE. |
WO2013130755A1 (en) * | 2012-02-29 | 2013-09-06 | Firestone Industrial Products Company, Llc | Replacement indicator, elastomeric articles and methods |
GB201303518D0 (en) * | 2013-02-27 | 2013-04-10 | Insignia Technologies Ltd | Indicator device |
CN105954280B (en) * | 2016-06-17 | 2019-02-22 | 深圳九星印刷包装集团有限公司 | Alkali sensitivity discoloration instruction device |
CN106124492A (en) * | 2016-06-17 | 2016-11-16 | 深圳九星印刷包装集团有限公司 | Alkali sensitization time instruction device |
CN105911059B (en) * | 2016-06-17 | 2019-02-15 | 深圳九星印刷包装集团有限公司 | Acid-sensitive discoloration instruction device |
CN106153620A (en) * | 2016-06-17 | 2016-11-23 | 深圳九星印刷包装集团有限公司 | Acid-sensitive time-indicating arrangement |
GB2593454B (en) * | 2020-03-18 | 2022-08-24 | Insignia Tech Ltd | Indicator film |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3018611A (en) * | 1962-01-30 | Timer device and method for determination | ||
US3243303A (en) * | 1962-06-27 | 1966-03-29 | Leighton C Johnson | Temperature monitor employing a flowable aqueous composition containing dispersed polyvinyl acetate as a flow retardant |
US3952746A (en) * | 1974-07-29 | 1976-04-27 | Summers F Wayne | Humidity indicating diaper cover |
US4205043A (en) * | 1978-05-04 | 1980-05-27 | Esch Victor H | Hazardous atmosphere badge |
US4212153A (en) * | 1978-02-07 | 1980-07-15 | Herculite Protective Fabrics Corporation | Time color indicator |
US4550150A (en) * | 1980-11-19 | 1985-10-29 | Allied Corporation | Coloration of acetylenic monomers by gases |
US4812053A (en) * | 1986-01-02 | 1989-03-14 | Lifelines Technology, Inc. | Activatable time-temperature indicator |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2918893A (en) * | 1955-11-17 | 1959-12-29 | Clyde A Norton | Leakage indicator for liquid fuel systems |
US2918033A (en) * | 1957-10-10 | 1959-12-22 | Martin J Snyder | Pipe leakage detector |
US4248597A (en) * | 1978-12-12 | 1981-02-03 | Akzona Incorporated | Time watch or depletion indicator for removable substances |
US5482000A (en) * | 1994-06-15 | 1996-01-09 | Patent Master, Inc. | Surface mount overheat indicator with projecting fusible disk |
-
1995
- 1995-07-25 US US08/506,334 patent/US5630372A/en not_active Expired - Fee Related
-
1996
- 1996-07-18 CA CA002226653A patent/CA2226653C/en not_active Expired - Fee Related
- 1996-07-18 DE DE19681506T patent/DE19681506T1/en not_active Withdrawn
- 1996-07-18 GB GB9727286A patent/GB2317695B/en not_active Expired - Fee Related
- 1996-07-18 AU AU65934/96A patent/AU6593496A/en not_active Abandoned
- 1996-07-18 WO PCT/US1996/012103 patent/WO1997005481A1/en active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3018611A (en) * | 1962-01-30 | Timer device and method for determination | ||
US3243303A (en) * | 1962-06-27 | 1966-03-29 | Leighton C Johnson | Temperature monitor employing a flowable aqueous composition containing dispersed polyvinyl acetate as a flow retardant |
US3952746A (en) * | 1974-07-29 | 1976-04-27 | Summers F Wayne | Humidity indicating diaper cover |
US4212153A (en) * | 1978-02-07 | 1980-07-15 | Herculite Protective Fabrics Corporation | Time color indicator |
US4205043A (en) * | 1978-05-04 | 1980-05-27 | Esch Victor H | Hazardous atmosphere badge |
US4550150A (en) * | 1980-11-19 | 1985-10-29 | Allied Corporation | Coloration of acetylenic monomers by gases |
US4812053A (en) * | 1986-01-02 | 1989-03-14 | Lifelines Technology, Inc. | Activatable time-temperature indicator |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19830572C1 (en) * | 1997-03-13 | 2000-03-16 | Joseph W Ramsey | Chemically activated timing indicator for warranty purpose of objects |
WO1998052035A1 (en) * | 1997-05-12 | 1998-11-19 | Minnesota Mining And Manufacturing Company | Time indicator based on carbon dioxide production |
WO1999030148A1 (en) * | 1997-12-05 | 1999-06-17 | Crown Cork & Seal Technologies Corporation | Shelf life indicator |
EP2904385A1 (en) * | 2012-10-03 | 2015-08-12 | Insignia Technologies Ltd. | Indicator device |
EP2904385B1 (en) * | 2012-10-03 | 2023-11-29 | Insignia Technologies Ltd. | Indicator device |
Also Published As
Publication number | Publication date |
---|---|
GB9727286D0 (en) | 1998-02-25 |
CA2226653A1 (en) | 1997-02-13 |
CA2226653C (en) | 1999-12-14 |
AU6593496A (en) | 1997-02-26 |
GB2317695A (en) | 1998-04-01 |
US5630372A (en) | 1997-05-20 |
GB2317695B (en) | 1999-04-14 |
DE19681506T1 (en) | 1999-01-28 |
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