G03C 8/22
Reduction of the chromogenic substance
G03C8/22 (Reduction of the chromogenic substance) appears on 8 US grants and 0 published applications in this corpus.
Search patents in G03C- Granted patents
- 8
- Published applications
- 0
- Assignees
- 2
- Inventors
- 11
- Latest grant
- 16 Oct 1984
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Diffusion transfer material and process16 Oct 1984US 4,477,554 AAgfa-Gevaert
- Color photographic recording material for the production of colored images by the dye diffusion transfer process4 Oct 1983US 4,407,929 AAgfa-Gevaert
- Process for the production of a multicolor image by image-wise dye diffusion transfer2 Aug 1983US 4,396,699 AAgfa-Gevaert
- Photographic recording material and non-diffusing compounds to be used in the material which contains a photographically active group which can be split off26 Apr 1983US 4,381,339 AAgfa-Gevaert
- Photographic material suited for use in diffusion transfer photography1 Feb 1983US 4,371,604 AAgfa-Gevaert
No published applications in this class yet.
Most cited
By later US patents
- Photographic material suited for use in diffusion transfer photography and method of diffusion transfer photography using such material30US 4,232,107 AAgfa-Gevaert · 1980
- Photographic material suited for use in diffusion transfer photography17US 4,371,604 AAgfa-Gevaert · 1983
- Color photographic recording material containing non-diffusing electron donor precursor compounds11US 4,366,240 AAgfa-Gevaert · 1982
- Dye-diffusion transfer process8US 4,353,975 AAgfa-Gevaert · 1982
- Color photographic recording material for the production of colored images by the dye diffusion transfer process7US 4,407,929 AAgfa-Gevaert · 1983