G03C 8/54
Timing layers
G03C8/54 (Timing layers) appears on 38 US grants and 0 published applications in this corpus.
Search patents in G03C- Granted patents
- 38
- Published applications
- 0
- Assignees
- 7
- Inventors
- 40
- Latest grant
- 26 Oct 1999
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 7 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 8 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Photographic elements having temporary barrier layer26 Oct 1999US 5,972,557 AFuji Photo Film Co., Ltd.
- Photographic element containing gelatin-modified polyurethane14 Sep 1999US 5,952,164 AEastman Kodak Company
- Diffusion transfer film unit14 Jan 1997US 5,593,810 APolaroid Corporation
- Photographic element with cellulose derivative polymer18 May 1993US 5,212,051 AFuji Photo Film Co., Ltd.
- Temporary barrier layer for photographic element12 Sep 1989US 4,865,946 AEastman Kodak Company
No published applications in this class yet.
Most cited
By later US patents
- Diffusion control layers in diffusion transfer photographic products23US 4,297,431 APolaroid Corporation · 1981
- .beta.-Eliminating polymers for diffusion control in photographic products22US 4,458,001 APolaroid Corporation · 1984
- Timing layer for color transfer assemblages comprising a mixture of cellulose acetate and maleic anhydride copolymer17US 4,009,030 AEastman Kodak Company · 1977
- Diffusion control layers in diffusion transfer photographic products15US 4,288,523 APolaroid Corporation · 1981
- Photographic material with a temporary barrier layer comprising a chill-gelable polymer12US 4,504,569 AEastman Kodak Company · 1985