G03C 8/38
Containing viscosity increasing substances
Official title: containing viscosity increasing substances
G03C8/38 (Containing viscosity increasing substances) appears on 12 US grants and 0 published applications in this corpus.
Search patents in G03C- Granted patents
- 12
- Published applications
- 0
- Assignees
- 3
- Inventors
- 19
- Latest grant
- 14 Dec 1999
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 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 processing composition and film unit14 Dec 1999US 6,001,531 APolaroid Corporation
- Diffusion transfer photosensitive film unit for silver transfer image12 Jan 1999US 5,858,608 APolaroid Corporation
- Color diffusion transfer film unit4 Mar 1997US 5,607,812 AFuji Photo Film Co., Ltd.
- Color diffusion transfer film unit5 Sep 1995US 5,447,818 AFuji Photo Film Co., Ltd.
- Photographic processing compositions including hydrophobically modified thickening agent6 Jun 1995US 5,422,233 APolaroid Corporation
No published applications in this class yet.
Most cited
By later US patents
- Photographic processing composition containing polyvinyl aminimide12US 4,080,206 APolaroid Corporation · 1978
- Photographic processing compositions including hydrophobically modified thickening agent11US 5,422,233 APolaroid Corporation · 1995
- Process for preparing polymeric oximes10US 4,350,801 APolaroid Corporation · 1982
- Photographic processing composition with poly(diacetone acrylamide) oxime and styrene-butadiene latex6US 4,680,247 APolaroid Corporation, Patent Dept. · 1987
- Novel oxime polymers and process for preparing same3US 4,256,614 APolaroid Corporation · 1981