Cover sheets with timing layer comprising cellulose acetate and copolymer of maleic anhydride
US4029849A · kind A · utility
10Cited by
2References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 7, 1976 |
| Grant date | Jun 14, 1977 |
| Priority date | — |
| Expiry date | Sep 7, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31978
- 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.