US3790390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic silver halide light-sensitive materials
Assignee: Fujifilm Holdings Corp
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Filing: 1971-12-30
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Granted: 1974-02-05
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Expires: 1991-12-30
Abstract
Abstract WHEREIN Z, R, R1, L1 and L2 are as defined in the specification. A silver halide photographic light-sensitive material wherein one emulsion layer contains silver halide grains with a mean grain size no larger than 0.9 microns, at least one group VIII metal compound, and at least one sensitizing dye of the formula:
Inventors
- 👤 K Shiba
- 👤 M Hinata
- 👤 K Yamasue
- 👤 A Sato
- 👤 T Ikeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:58
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12; G03C1/22; G03C1/09
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
19 words
A silver halide photographic emulsion as claimed in claim 1 wherein Y in the general formula is oxygen atom.
Claim 2
Dependent Claim
61 words
A silver halide photographic emulsion as claimed in claim 1 wherein the alkyl group of R, R1, or Ro is a hydroxy alkyl group, an acetoxyalkyl group, an alkoxyalkyl group, a carboxy group-containing alkyl group, a sulfo group-containing alkyl group, an aralkyl group, or an allyl group, wherein the aryl group of Ro is an alkoxy phenyl or a halogenophenyl group.
Claim 3
Dependent Claim
21 words
A silver halide photographic emulsion as claimed in claim 1 wherein the mean grain size is no greater than 0.6 micron.
Claim 4
Dependent Claim
20 words
A silver halide photographic emulsion as claimed in claim 1 wherein the group VIII metal is iron, iridium, or rhodium.
Claim 5
Dependent Claim
18 words
A silver halide photographic emulsion as claimed in claim 1 wherein the emulsion further contains a gold compound.
Claim 6
Dependent Claim
17 words
A silver halide photographic emulsion as claimed in claim 7 wherein the gold compound is potassium chloroaurate.
Claim 7
Dependent Claim
19 words
A silver halide photographic emulsion as claimed in claim 1 wherein the emulsion further contains 2-mercaptobenzimidazole, 1-phenyl-5-mercaptotetrazole or 5-methyl-7-hydroxy-1,3,4-triazoindolizine.
Claim 8
Dependent Claim
21 words
A silver halide photographic emulsion as claimed in claim 1 wherein the sensitizing dye is chosen from the group consisting of
Claim 9
Dependent Claim
24 words
A silver halide photographic emulsion as claimed in claim 3, wherein said hydroxyalkyl group is chosen from the group consisting of 2-hydroxyethyl and 4-hydroxybutyl.
Claim 10
Dependent Claim
24 words
A silver halide photographic emulsion as claimed in claim 3, wherein said acetoxyalkyl group is chosen from the group consisting of 2-acetoxyethyl and 3-acetoxypropyl.
Claim 11
Dependent Claim
16 words
A silver halide photographic emulsion as claimed in claim 3, wherein said alkoxyalkyl group is 2-methoxyethyl.
Claim 12
Dependent Claim
30 words
A silver halide photographic emulsion as claimed in claim 3, wherein said carboxy group containing alkyl group is selected from the group consisting of carboxymethyl, 2-carboxyethyl, 3-carboxypropyl, and 2-(2-carboxyethoxy) ethyl.
Claim 13
Dependent Claim
38 words
A silver halide photographic cmulsion as claimed in claim 3, wherein said sulfo-group containing alkyl group is selected from the group consisting of 2-sulfoethyl, 3-sulfopropyl, 4-sulfobutyl, 2-hydroxy-1-sulfopropyl, 2-(3-sulfopropoxy) ethyl, 2-acetoxy-1-sulfopropyl, 3-methoxy-2-(3-sulfopropoxy) propyl, 2-(2-(3-sulfopropoxy) ethoxy) ethyl, and 2-hydroxy-3-(3''-sulfopropoxy) propyl.
Claim 14
Dependent Claim
26 words
A silver halide photographic emulsion as claimed in claim 3, wherein said aralkyl group is selected from the group consisting of benzyl, phenethyl, p-sulfobenzyl, and p-carboxybenzyl.
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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |