G03C 7/305
Substances liberating photographically active agents
Official title: Substances liberating photographically active agents, e.g. development-inhibiting releasing couplers (G03C7/388 takes precedence {; in combination with other additives or included in a specific colour photographic material G03C7/3003; in combination with other couplers G03C7/3225})
G03C7/305 (Substances liberating photographically active agents) appears on 892 US grants and 97 published applications in this corpus.
Search patents in G03C- Granted patents
- 892
- Published applications
- 97
- Assignees
- 41
- Inventors
- 867
- Latest grant
- 29 Mar 2011
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 18 | 0 |
| 1978 | 16 | 0 |
| 1979 | 19 | 0 |
| 1980 | 21 | 0 |
| 1981 | 22 | 0 |
| 1982 | 18 | 0 |
| 1983 | 13 | 0 |
| 1984 | 13 | 0 |
| 1985 | 24 | 0 |
| 1986 | 16 | 0 |
| 1987 | 21 | 0 |
| 1988 | 35 | 0 |
| 1989 | 43 | 0 |
| 1990 | 33 | 0 |
| 1991 | 42 | 0 |
| 1992 | 39 | 0 |
| 1993 | 64 | 0 |
| 1994 | 59 | 0 |
| 1995 | 49 | 0 |
| 1996 | 41 | 0 |
| 1997 | 29 | 0 |
| 1998 | 26 | 0 |
| 1999 | 31 | 0 |
| 2000 | 43 | 0 |
| 2001 | 38 | 5 |
| 2002 | 32 | 18 |
| 2003 | 28 | 13 |
| 2004 | 12 | 25 |
| 2005 | 6 | 11 |
| 2006 | 5 | 11 |
| 2007 | 12 | 9 |
| 2008 | 4 | 3 |
| 2009 | 3 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G03C 7/30511Characterised by the releasing group489
- G03C 7/30541Characterised by the released group324
- G03C 7/30576Characterised by the linking group between the releasing and the released groups71
- G03C 7/30594Combination of substances liberating photographically active agents29
- G03C 2007/30505Photographic useful groupIndexing code0
Recent patents
- Silver halide color photosensitive material and method of processing the same29 Mar 2011US 7,914,977 B2FUJIFILM Corporation
- Silver halide photographic material and image forming method using the same22 Sep 2009US 7,592,133 B2FUJIFILM Corporation
- Silver halide color photosensitive material12 May 2009US 7,531,298 B2FUJIFILM Corporation
- Silver halide color photographic light-sensitive material5 May 2009US 7,527,922 B2FUJIFILM Corporation
- Image forming method for the photothermographic material9 Dec 2008US 7,462,444 B2FUJIFILM Corporation
- Image forming method, image forming apparatus, and image forming program10 Sep 2026US 2026/0267213 A1FUJIFILM Corporation
- Image forming method, image forming apparatus, and image forming program16 Dec 2021US 2021/0389660 A1FUJIFILM Corporation
- Silver Halide Color Photosensitive Material and Method of Processing the Same20 Nov 2008US 2008/0286702 A1FUJIFILM Corporation
- Silver halide photographic material and image forming method using the same30 Oct 2008US 2008/0268385 A1FUJIFILM Corporation
- Dye-forming coupler, silver halide photographic light-sensitive material, and azomethine dye compound4 Sep 2008US 2008/0214810 A1
Most cited
By later US patents
- Photographic emulsions, elements and processes utilizing release compounds124US 4,248,962 AEastman Kodak Company · 1981
- Photographic element and process comprising a compound which comprises two timing groups in sequence90US 4,861,701 AEastman Kodak Company · 1989
- Silver halide photographic material80US 4,409,323 AKonishiroku Photo Industry Co., Ltd. · 1983
- Light-sensitive silver halide color photographic material80US 4,482,629 AKonishiroku Photo Industry Co., Ltd. · 1984
- Method of forming color image comprising heterocyclic magenta dye-forming coupler72US 4,540,654 AFuji Photo Film Co., Ltd. · 1985