US4154616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide photographic emulsion
Assignee: Fujifilm Holdings Corp
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Filing: 1977-05-12
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Granted: 1979-05-15
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Expires: 1997-05-12
Abstract
Abstract A silver halide photographic emulsion containing at least one sensitizing dye represented by the following general formula (I), <IMAGE> (I) in which Z represents an atomic group necessary for forming a benzoxazole nucleus or a naphthoxazole nucleus; R1 represents an aliphatic group; R2 represents an alkyl group, an allyl group or an aryl group; R3 represents a 2-(2-hydroxyethoxy)-ethyl group, a 2-(2-acyloxyethyoxy)-ethyl group, an N-(N,N-dialkylaminoalkyl)carbamoylalkyl group, an N-(N,N,N-trialkylammoniumalkyl)carbamoylalkyl group or an N,N,N-trialkylammoniumalkyl group; X represents an acid anion; and n represents 0 or 1.
Inventors
- 👤 Akira Sato
- 👤 Akira Ogawa
- 👤 Masanao Hinata
- 👤 Haruo Takei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:09
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12; G03C1/22
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
116 words
A silver halide photographic emulsion containing at least one sensitizing dye represented by the following general formula (I): ##STR30## in which Z represents an atomic group necessary for forming a benzoxazole nucleus or a naphthoxazole nucleus; R 1 represents a member selected from the group consisting of an unsubstituted alkyl group; an alkyl group substituted with a hydroxy group, an alkoxy group, an acyloxy group, a carboxy group, an alkoxycarbonyl group, a sulfo group, or an aryl group; or an allyl group; R 2 represents an alkyl group, an allyl group or an aryl group; R 3 represents a 2-(2-hydroxyethoxy)-ethyl group, or a 2-(2-acyloxyethoxy)-ethyl group; X represents an acid anion; and n represents 0 or 1.
Claim 2
Dependent Claim
116 words
A silver halide photographic emulsion containing at least one sensitizing dye represented by the following general formula (I): ##STR30## in which Z represents an atomic group necessary for forming a benzoxazole nucleus or a naphthoxazole nucleus; R 1 represents a member selected from the group consisting of an unsubstituted alkyl group; an alkyl group substituted with a hydroxy group, an alkoxy group, an acyloxy group, a carboxy group, an alkoxycarbonyl group, a sulfo group, or an aryl group; or an allyl group; R 2 represents an alkyl group, an allyl group or an aryl group; R 3 represents a 2-(2-hydroxyethoxy)-ethyl group, or a 2-(2-acyloxyethoxy)-ethyl group; X represents an acid anion; and n represents 0 or 1.
Claim 3
Dependent Claim
28 words
The silver halide photographic emulsion of claim 1, wherein Z is 5-fluorobenzoxazole, 5-chlorobenzoxazole, 5-chlorobenzoxazole, 5-bromobenzoxazole, 5-methylbenzoxazole, 5-methoxybenzoxazole, 5-hydroxybenzoxazole, 5-trifluoromethylbenzoxazole, 5-methoxycarbonylbenzoxazole, 5-acetylbenzoxazole, 5-phenylbenzoxazole, 6-methylbenzoxazole, 6-methoxybenzoxazole, 6-hydroxybenzoxazole, 5,6-dimethylbenzoxazole, or 5-chloro-6-methylbenzoxazole.
Claim 4
Dependent Claim
28 words
The silver halide photographic emulsion of claim 1, wherein said silver halide is silver chloride, silver bromide, silver iodide, silver chlorobromide, silver bromiodide, silver chloroiodide, or silver chlorobromoiodide.
Claim 5
Dependent Claim
26 words
The silver halide photographic emulsion of claim 1, wherein the grains of said silver halide have an average diameter ranging from about 0.04 to 2 microns.
Claim 6
Dependent Claim
34 words
The silver halide photographic emulsion of claim 1, wherein said silver halide emulsion contains at least one of a chemical sensitizer, a hardener, an antifoggant, a stabilizer, a coating aid, and a color coupler.
Claim 7
Dependent Claim
21 words
A silver halide photographic element comprising a support having thereon a layer of the silver halide photographic emulsion of claim 1.
Claim 8
Dependent Claim
15 words
The silver halide photographic emulsion of claim 1, wherein R 2 represents an alkyl group.
Claim 9
Dependent Claim
19 words
The silver halide photographic emulsion of claim 1, wherein R 2 represents a methyl, ethyl, propyl or butyl group.
Claim 10
Dependent Claim
15 words
The silver halide photographic emulsion of claim 1, wherein R 2 represents an allyl group.
Claim 11
Dependent Claim
15 words
The silver halide photographic emulsion of claim 1, wherein R 2 represents an aryl group.
Claim 12
Dependent Claim
17 words
The silver halide photographic emulsion of claim 1, wherein R 2 represents a phenyl or p-sulfophenyl group.
Claim 13
Dependent Claim
15 words
The silver halide photographic emulsion of claim 1, wherein R 3 represents said 2-(2-hydroxyethoxy)-ethyl group.
Claim 14
Dependent Claim
15 words
The silver halide photographic emulsion of claim 1, wherein R 3 represents said 2-(2-acyloxyethoxy)-ethyl group.
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) | 1982-05-14 | 1982-11-13 | 1983-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-14 | 1986-11-13 | 1987-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-14 | 1990-11-13 | 1991-05-15 | $7700.00 | Window Closed / Lapsed |