G03C 8/18
Dye developers
G03C8/18 (Dye developers) appears on 48 US grants and 0 published applications in this corpus.
Search patents in G03C- Granted patents
- 48
- Published applications
- 0
- Assignees
- 7
- Inventors
- 51
- Latest grant
- 23 Nov 1993
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 10 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Sulfonated xanthene dyes, and photographic products and processes employing these dyes23 Nov 1993US 5,264,322 APolaroid Corporation
- Sulfonated xanthene dyes, and photographic products and processes employing these dyes16 Feb 1993US 5,187,282 APolaroid Corporation
- Heat developable color light-sensitive material with dye developers18 Sep 1990US 4,957,848 AFuji Photo Film Co., Ltd.
- Light-sensitive material with compounds reactive with dye developers23 Aug 1988US 4,766,056 AFuji Photo Film Co., Ltd.
- Method for forming an image8 Mar 1988US 4,729,942 AFuji Photo Film Co., Ltd.
No published applications in this class yet.
Most cited
By later US patents
- Positive-working immobile photographic compounds which cleave by intramolecular nucleophilic displacement in alkali unless oxidized35US 3,980,479 AEastman Kodak Company · 1976
- Photographic materials with ballasted, alkali cleavable azo dyes21US 3,942,987 AEastman Kodak Company · 1976
- Diffusable dye-releasing compounds which are cleavable upon oxidation20US 3,954,476 AEastman Kodak Company · 1976
- Magenta image-providing phenylazo-naphthyl dyes17US 3,932,380 AEastman Kodak Company · 1976
- Positive-working immobile photographic azo compounds11US 4,108,850 AEastman Kodak Company · 1978