US3615633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide photographic emulsions supersensitized with an oxadiazole and a methine dye
Assignee: Eastman Kodak Co
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Filing: 1969-08-18
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Granted: 1971-10-26
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Expires: 1989-08-18
Abstract
Abstract Photographic silver halide emulsions are supersensitized with the combination of a photographic spectral sensitizing methine dye and an oxazole, an oxadiazole, a thiozole or a thiadiazole.
Inventors
- 👤 Dugald A Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:29
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/28
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
132 words
A light sensitive photographic silver halide emulsion containing a supersensitizing combination comprising (1) at least one compound selected from the group consisting of 2-methyl-5-phenyl-1,3,4-oxadiazole; 2-methyl-5-( Alpha -naphthyl)-1,3,4-oxadiazole; 2-methyl-5-p-hydroxyphenyl-1,3,4-oxadiazole; 2,5-di-(p-aminophenyl)-1,3,4-oxadiazole; 2,5-di(p-aminostyryl)-1,3,4-oxadiazole; 5-(p-ethoxyphenyl)-2-methyl-1,3,4-oxadiazole; 2-(p-biphenyl)-5-phenyl-1,3,4-oxadiazole; 5-phenyl-2-stilben-4-yl-1,3, 4-oxadiazole; 2,5-bis(4-diethylaminophenyl)-1,3,4-oxadiazole; 2, 5-di-( Alpha -naphthyl)-1,3,4-oxadiazole; and (2) at least one methine dye selected from the group consisting of 1,1''-diethyl-2, 2''-cyanine salt; 3,3''-dimethyl-9-ethyl-4,5,4'',5''-naphthothiacarbocyanine salt; 3,3''-di- Beta -hydroxyethylthiadicarbocyanine salt; 1''-butyl-3-ethyl-4-phenylthia-4''-carbocyanine salt; 3,3''-diethyloxathiadicarbocyanine salt; 1,3-diethyl-5-(di(1-ethyl-2(1H)- Beta -naphthothiazolylidene)isopropylidene)barbituric acid; 2-(di(1-ethyl-2(1H)- Beta -naphthothiazolylidene)isopropylidene)-1,3-indiandione; 1,3-diethyl- 5-((1-ethyl-2(1H)- Beta -naphthothiazolylidene)isopropylidene)-barbituric acid; 2-((1-ethyl-2(1H)- Beta -naphthiazolylidene)iso-propylidene)-1,3-indandione; 5-(di(1-ethyl-2(1H)- Beta -naphthothiazolylidene)isopropylidene)-1,3-di(-methoxyethyl)barbituric acid; 2-((2-benzothiazolylethiodide)methylene )- 3- Beta -methoxyethyl-5-((1-methyl- 2(1H)-naphtho (1,2)thiazolylidene- Alpha -phenylethylidene)- 4-thiazolidone; 1,3-diethyl-5- (1,3-di(3-ethyl-2(3H)-benzoxazolyli-dene)-ethylidene)indan-2-ylidene barbituric acid; 2-dicyanomethylene-1,3-di((3-ethyl-2(3H) -benzothiazolylidene)ethylidene)indan; 1,3-diethyl-5- Beta -(3-ethyl-2(3H)-benzothiazolylidene) - Alpha -((3-ethyl- 2(3H)-benzothiazolylidene)amino)ethylidene barbituric acid; 1,3-diethyl-5 2,5-di((3-ethyl-2(3H)-benzoxazolylidene)ethylidene)-cyclopentylidene barbituric acid; anhydro-3-ethyl-5-phenyl-1''-(4-sulfobutyl)thia-4''-carbocyanine hydroxide; 1,3-diethyl-5- 2-(3-ethyl-2(3H)-benzothiazolylidene)-5-((3-ethyl-2(3H) -benzothiazolylidene)ethylidene)cyclopentylidene barbituric acid; 5-(di(3-ethyl-2(3H)-benzothiazolylidene)isopropylidene)-3-ethyl-1-phenyl hydantoin; 5-(di(3-ethyl-2(3H)-benzothiazolylidene)isopropylidene)-2,2-dimethyl-1,3 -dioxane-4,6-dione; 2-((2-benzothiazolylethoperchlorate)methylene)-3-(3-dimethylaminopropyl)-5 -((1-methylnaphtho(1,2d)thiazolin-2-ylidene)-1-phenylethylidene)-4 -thiazolidinone; 3-(3-dimethylaminopropyl)-5-((3-ethyl-2-benzothiazolinylidene)ethylidene)-2 -thio-2,4-oxazolidinedione; and 3,3''-diethylselenadicarbocyanine salt.
Claim 2
Dependent Claim
21 words
A light-sensitive photographic silver halide emulsion supersensitized with the combination comprising (1) 2,5-di(p-aminophenyl)-1,3,4-oxadiazole and (2) 5-(di(1-ethyl-2(1H)- Beta -naphthothiazolylidene)isopropylidene)-1,3-di( Beta -methoxyethyl)barbituric acid.
Claim 3
Dependent Claim
18 words
A light-sensitive photographic silver halide emulsion supersensitized with the combination comprising (1) 2,5-di(p-aminostyryl)-1,3,4-oxadiazole and (2) 2-(di(1-ethyl-2(1H)- Beta -naphthothiazolylidene)isopropylidene)-1,3-indandione.
Claim 4
Dependent Claim
16 words
A light-sensitvive photographic silver halide emulsion supersensitized with the combination comprising (1) 2,5-di(p-aminophenyl)-1,3,4-oxadiazole (2) 1,1''-diethyl-2,2''-cyanine salt.
Claim 5
Dependent Claim
18 words
A light-sensitive photographic silver halide emulsion supersensitized with the combinition comprising (1) 2,5-di(p-aminostyryl)-1,3,4-oxadiazole and (2) 2-((1-ethyl-2(1H)- Beta -naphthiazolylidene)isopropylidene)-1,3-indandione.
Claim 6
Dependent Claim
20 words
A light-sensitive photographic silver halide emulsion supersensitized with the combination comprising (1) 2,5-di(p-aminostyryl)-1,3,4-oxadiazole and (2) 1,3-diethyl-5- 2-(3-ethyl-2(3H)-benzothiazolylidene)-5-((3-ethyl-2(3H) -benzothiazolylidene)ethylidene)cyclopentylidene barbituric acid.
Claim 7
Dependent Claim
16 words
A photographic element comprising a support having a coating thereon containing an emulsion of claim 1.
Claim 8
Dependent Claim
16 words
A photographic element comprising a support having a coating thereon containing an emulsion of claim 2.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |