CA649852A - Phototropic light filters - Google Patents
Phototropic light filtersInfo
- Publication number
- CA649852A CA649852A CA649852A CA649852DA CA649852A CA 649852 A CA649852 A CA 649852A CA 649852 A CA649852 A CA 649852A CA 649852D A CA649852D A CA 649852DA CA 649852 A CA649852 A CA 649852A
- Authority
- CA
- Canada
- Prior art keywords
- phototropic
- light filters
- filters
- light
- phototropic light
- 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.)
- Expired
Links
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA649852T |
Publications (1)
Publication Number | Publication Date |
---|---|
CA649852A true CA649852A (en) | 1962-10-09 |
Family
ID=35938495
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA649852A Expired CA649852A (en) | Phototropic light filters |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA649852A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3272646A (en) * | 1963-04-16 | 1966-09-13 | American Cyanamid Co | Impregnated porous photochromic glass |
US3323244A (en) * | 1964-04-09 | 1967-06-06 | Corning Glass Works | Display device |
US3361706A (en) * | 1964-03-06 | 1968-01-02 | American Cyanamid Co | Control of the photochromic return rate of (arylazo) thioformic arylhydrazidates |
US3485764A (en) * | 1964-05-22 | 1969-12-23 | American Cyanamid Co | Polymeric photochromic compositions stabilized with ultraviolet light absorbers |
US4166043A (en) * | 1974-12-23 | 1979-08-28 | American Optical Corporation | Stabilized photochromic materials |
US4367170A (en) * | 1975-01-24 | 1983-01-04 | American Optical Corporation | Stabilized photochromic materials |
-
0
- CA CA649852A patent/CA649852A/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3272646A (en) * | 1963-04-16 | 1966-09-13 | American Cyanamid Co | Impregnated porous photochromic glass |
US3361706A (en) * | 1964-03-06 | 1968-01-02 | American Cyanamid Co | Control of the photochromic return rate of (arylazo) thioformic arylhydrazidates |
US3323244A (en) * | 1964-04-09 | 1967-06-06 | Corning Glass Works | Display device |
US3485764A (en) * | 1964-05-22 | 1969-12-23 | American Cyanamid Co | Polymeric photochromic compositions stabilized with ultraviolet light absorbers |
US3488290A (en) * | 1964-05-22 | 1970-01-06 | American Cyanamid Co | Stabilized photochromic compositions containing antioxidant |
US4166043A (en) * | 1974-12-23 | 1979-08-28 | American Optical Corporation | Stabilized photochromic materials |
US4367170A (en) * | 1975-01-24 | 1983-01-04 | American Optical Corporation | Stabilized photochromic materials |
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