US3652283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic materials containing anti-halation dyestuffs
Assignee: GAF Corp
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Filing: 1968-05-13
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Granted: 1972-03-28
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Expires: 1988-05-13
Abstract
Abstract WHEREIN R, R1, R2, and R3 represent alkyl containing from one to four carbon atoms and R4 represents a member selected from the group consisting of cyano and halogen. 1. A light-sensitive photographic film element comprising at least one light-sensitive gelatin silver halide emulsion coated on a film base and wherein at least one of the layers comprising said film element contains a water-soluble anti-halation dyestuff having a broad absorption in the green region of the spectrum comprising a quaternary ammonium salt of a dyestuff of the following structural formula:
Inventors
- 👤 E Scudder Mackey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:18
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/83; G03C1/832
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
60 words
A LIGHT-SENSITIVE PHOTOGRAPHIC FILM ELEMENT COMPRISING AT LEAST ONE LIGHT-SENSITIVE GELATIN SILVER HALIDE EMULSION COATED ON A FILM BASE AND WHEREIN AT LEAST ONE OF THE LAYERS COMPRISING SAID FILM ELEMENT CONTAINES A WATER-SOLUBLE ANTIHALATION DYESTUFF HAVING A BROAD ABSORPTION IN THE GREEN REGION OF THE SPECTRUM COMPRISING A QUATERNARY AMMONIUM SALT OF A DYESTUFF OF THE FOLLOWING STRUCTURAL FORMULA:
Claim 2
Dependent Claim
60 words
A LIGHT-SENSITIVE PHOTOGRAPHIC FILM ELEMENT COMPRISING AT LEAST ONE LIGHT-SENSITIVE GELATIN SILVER HALIDE EMULSION COATED ON A FILM BASE AND WHEREIN AT LEAST ONE OF THE LAYERS COMPRISING SAID FILM ELEMENT CONTAINES A WATER-SOLUBLE ANTIHALATION DYESTUFF HAVING A BROAD ABSORPTION IN THE GREEN REGION OF THE SPECTRUM COMPRISING A QUATERNARY AMMONIUM SALT OF A DYESTUFF OF THE FOLLOWING STRUCTURAL FORMULA:
Claim 3
Dependent Claim
18 words
A film element according to claim 1 wherein saId dyestuff comprises a compound of the following structural formula:
Claim 4
Dependent Claim
18 words
A film element according to claim 1 wherein said dyestuff comprises a compound of the following structural formula:
Claim 5
Dependent Claim
18 words
A film element according to claim 1 wherein said dyestuff comprises a compound of the following structural formula:
Claim 6
Dependent Claim
38 words
A film element according to claim 1 wherein said anti-halation dyestuff is present in a backing layer, the latter being disposed on the side on the film base opposite to the light sensitive gelatin silver halide emulsion side.
Claim 7
Dependent Claim
21 words
A film element according to claim 1 wherein said anti-halation dyestuff is present in a light sensitive silver halide emulsion layer.
Claim 8
Dependent Claim
68 words
A coating composition comprising a film-forming alkali soluble organic binder and a water-soluble anti-halation dyestuff having a broad absorption in the green region of the spectrum comprising a quaternary ammonium salt of a dyestuff of the following structural formula: wherein R, R1, R2, and R3 represent alkyl containing from one to four carbon atoms and R4 represents a member selected from the group consisting of cyano and halogen.
Claim 9
Dependent Claim
68 words
A coating composition comprising a film-forming alkali soluble organic binder and a water-soluble anti-halation dyestuff having a broad absorption in the green region of the spectrum comprising a quaternary ammonium salt of a dyestuff of the following structural formula: wherein R, R1, R2, and R3 represent alkyl containing from one to four carbon atoms and R4 represents a member selected from the group consisting of cyano and halogen.
Claim 10
Dependent Claim
13 words
A composition according to claim 7 further containing a light-sensitive silver halide salt.
Claim 11
Dependent Claim
12 words
A composition according to claim 7 wherein said organic binder comprises gelatin.
Claim 12
Dependent Claim
33 words
A film element according to claim 1 wherein said anti-halation dye is present in a screening layer which is placed between and in integral contact with the film base and the emulsion layer.
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) | 1975-03-28 | 1975-09-27 | 1976-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-28 | 1979-09-27 | 1980-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-28 | 1983-09-27 | 1984-03-28 | $7700.00 | Window Closed / Lapsed |