US4564591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide color photographic material
Assignee: Konica Minolta Inc
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Filing: 1985-03-21
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Granted: 1986-01-14
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Expires: 2005-03-21
Abstract
Abstract Silver halide color photographic material comprising a support and at least one emulsion layer thereon, the emulsion layer containing silver halide grains comprising core particles of high chloride content and a silver halide coating layer on the core particle. The coating layer is primarily silver bromide and the combined silver halide content of the core particles and the coating thereon is 90 to 99.5 mol % silver chloride and 0.5 to 10 mol % silver bromide.
Inventors
- 👤 Shigeo Tanaka
- 👤 Kaoru Onodera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:03
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3022; G03C1/00; G03C1/005; G03C1/035; G03C2001/03517; G03C2001/03535
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
88 words
A silver halide color photographic material comprising a support and an emulsion layer coated thereon, said emulsion layer comprising silver halide grains having silver halide core particles and a silver halide coating layer, said silver halide coating layer comprising at least 60 mol % silver bromide, and said silver halide core particles having a high chloride content, and wherein silver chloride comprises 90 to 99.5 mol % and silver bromide comprises 0.5 to 10 mol % of all of the silver halide present in said silver halide grains.
Claim 2
Dependent Claim
88 words
A silver halide color photographic material comprising a support and an emulsion layer coated thereon, said emulsion layer comprising silver halide grains having silver halide core particles and a silver halide coating layer, said silver halide coating layer comprising at least 60 mol % silver bromide, and said silver halide core particles having a high chloride content, and wherein silver chloride comprises 90 to 99.5 mol % and silver bromide comprises 0.5 to 10 mol % of all of the silver halide present in said silver halide grains.
Claim 3
Dependent Claim
40 words
The material of claim 1 wherein said silver bromide is present in an amount of 0.5 to 5 mol % of the silver halide in said grains and all of said silver bromide is in said silver halide coating layer.
Claim 4
Dependent Claim
19 words
The material of claim 1 wherein said silver halide coating layer is at least 80 mol % silver bromide.
Claim 5
Dependent Claim
16 words
The material of claim 1 wherein said silver halide coating layer consists essentially of silver bromide.
Claim 6
Dependent Claim
19 words
The material of claim 2 wherein said silver halide coating layer is at least 80 mol % silver bromide.
Claim 7
Dependent Claim
19 words
A material according to claim 1, wherein said silver halide grains are chemically sensitized by means of sulphur sensitization.
Claim 8
Dependent Claim
16 words
The material of claim 2 wherein said silver halide coating layer consists essentially of silver bromide.
Claim 9
Dependent Claim
19 words
A material according to claim 7, wherein said silver halide grains are chemically sensitized by means of sulphur sensitization.
Claim 10
Dependent Claim
19 words
A material according to claim 2, wherein said silver halide grains are chemically sensitized by means of sulphur sensitization.
Claim 11
Dependent Claim
19 words
A material according to claim 3, wherein said silver halide grains are chemically sensitized by means of sulphur sensitization.
Claim 12
Dependent Claim
19 words
A material according to claim 4, wherein said silver halide grains are chemically sensitized by means of sulphur sensitization.
Claim 13
Dependent Claim
19 words
A material according to claim 5, wherein said silver halide grains are chemically sensitized by means of sulphur sensitization.
References Cited (Backward Citations)
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Cited
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US3761266A
Cited
US3935014A
Cited
US4070190A
Cited
US4094684A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-13 | 1989-07-15 | 1990-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-13 | 1993-07-15 | 1994-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-13 | 1997-07-15 | 1998-01-14 | $7700.00 | Window Closed / Lapsed |