Patent US4407940A successfully refreshed from Google Patents.
US4407940A
Expired / Lapsed
US
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Silver halide color photographic material
Assignee: Konica Minolta Inc
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Filing: 1982-08-16
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Granted: 1983-10-04
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Expires: 2002-08-16
Abstract
Abstract A silver halide color photographic material which comprises a support, a silver halide emulsion layer provided thereon and a layer provided contiguous to said silver halide emulsion layer, said silver halide emulsion layer containing silver halide crystals of which average crystal size is not greater than 0.9 microns and at least 95% by number of total crystals have crystal sizes falling within ±40% said average crystal size, and said silver halide emulsion layer and/or said layer contiguous thereto containing a compound represented by the following general formula [I] ##STR1## where R 1 and R 2 independently represent an alkyl group having 6 to 12 carbon atoms.
Inventors
- 👤 Shinichi Nakamura
- 👤 Takashi Kadowaki
- 👤 Mitsuhiro Okumura
- 👤 Syun Takada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:33
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/392; G03C7/39208; G03C7/39232
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
110 words
A silver halide color photographic material which comprises a support, a silver halide emulsion layer provided thereon and a layer provided contiguous to said silver halide emulsion layer, said silver halide emulsion layer containing silver halide crystals of which average crystal size is not greater than 0.9 microns and at least 95% by number of total crystals have crystal sizes falling within ±40% said average crystal size, and at least one of said silver halide emulsion layer and/or said layer contiguous thereto containing a compound represented by the following general formula [I] ##STR6## where R 1 and R 2 independently represent an alkyl group having 6 to 12 carbon atoms.
Claim 2
Dependent Claim
110 words
A silver halide color photographic material which comprises a support, a silver halide emulsion layer provided thereon and a layer provided contiguous to said silver halide emulsion layer, said silver halide emulsion layer containing silver halide crystals of which average crystal size is not greater than 0.9 microns and at least 95% by number of total crystals have crystal sizes falling within ±40% said average crystal size, and at least one of said silver halide emulsion layer and/or said layer contiguous thereto containing a compound represented by the following general formula [I] ##STR6## where R 1 and R 2 independently represent an alkyl group having 6 to 12 carbon atoms.
Claim 3
Dependent Claim
20 words
A silver halide color photographic material according to claim 1 wherein said alkyl group has 8 or 9 carbon atoms.
Claim 4
Dependent Claim
25 words
A silver halide color photographic material according to claim 1 wherein said layer contiguous to said silver halide emulsion layer is a non-photosensitive gelatin layer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |