US4444877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive silver halide emulsion
Assignee: Konica Minolta Inc
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Filing: 1982-02-09
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Granted: 1984-04-24
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Expires: 2002-02-09
Abstract
Abstract A light-sensitive silver halide emulsion is disclosed, which comprises cores composed of silver halide grains and shells covering the cores. The cores consist essentially of silver halide containing silver iodide, and the shells consist essentially of silver bromide, silver chloride or silver chlorobromide excluding silver iodide. The shells have a thickness of from 0.01 to 0.1μ. This light-sensitive silver halide emulsion has high sensitivity and superior covering power.
Inventors
- 👤 Takeo Koitabashi
- 👤 Yoshihiro Haga
- 👤 Syoji Matsuzaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:47
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/035; G03C2001/03535; G03C2001/0357
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
49 words
A light-sensitive silver halide emulsion which comprises silver halide grains composed of cores consisting essentially of silver halide containing silver iodide and shells covering said cores and consisting essentially of silver bromide, silver chloride or silver chlorobromide, each of said shells having a thickness of from 0.01 to 0.1μ.
Claim 2
Dependent Claim
49 words
A light-sensitive silver halide emulsion which comprises silver halide grains composed of cores consisting essentially of silver halide containing silver iodide and shells covering said cores and consisting essentially of silver bromide, silver chloride or silver chlorobromide, each of said shells having a thickness of from 0.01 to 0.1μ.
Claim 3
Dependent Claim
28 words
A light-sensitive silver halide emulsion according to claim 1, wherein said cores are composed essentially of silver halide containing from 0.5 to 10 molar % of silver iodide.
Claim 4
Dependent Claim
19 words
A light-sensitive silver halide emulsion according to claim 1 or 2, wherein said shells consist essentially of silver bromide.
Claim 5
Dependent Claim
20 words
A light-sensitive silver halide emulsion according to claim 1, wherein said cores are composed of mono-dispersion type silver halide grains.
Claim 6
Dependent Claim
24 words
A light-sensitive silver halide emulsion according to claim 1 or 4, wherein each of said shells has a thickness of from 0.01 to 0.06μ.
Claim 7
Dependent Claim
30 words
A light-sensitive silver halide emulsion according to claim 1, wherein said cores consist essentially of mono-dispersion type silver halide grains containing from 0.5 to 10 molar % of silver iodide.
Claim 8
Dependent Claim
31 words
A light-sensitive silver halide emulsion according to claim 1 or 6, wherein said shells consist essentially of silver bromide, each of said shells having a thickness of from 0.01 to 0.06μ.
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) | 1987-04-24 | 1987-10-24 | 1988-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-24 | 1991-10-24 | 1992-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-24 | 1995-10-24 | 1996-04-24 | $7700.00 | Window Closed / Lapsed |