Timing layer for color transfer assemblages comprising a mixture of cellulose acetate and maleic anhydride copolymer
US4009030A · kind A · utility
17Cited by
3References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 5, 1974 |
| Grant date | Feb 22, 1977 |
| Priority date | — |
| Expiry date | Nov 5, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31971
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Timing layer for color diffusion transfer assemblages comprises a mixture of cellulose acetate and a maleic anhydride copolymer with 2 to 20% by weight of the mixture being said copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.