US2663638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color correction of multicolor film by integral styryl dye masking images
Assignee: Imperial Chemical Industries Ltd
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Filing: 1949-08-22
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Granted: 1953-12-22
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Expires: 1969-08-22
Abstract
No abstract record available.
Inventors
- 👤 Ganguin Karl Otto
- 👤 Macdonald Eric
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:43
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/18
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
132 words
A PROCESS FOR THE PRODUCTION OF A COLOR-CORRECTED PHOTOGRAPHIC TRANSPARENCY FROM MULTILAYER FILM HAVING DIFFERENTLY SENSITIZED SILVER HALIDE EMULSION LAYERS CONTAINING COLOR FORMERS ADAPTED TO YIELD YELLOW, MAGENTA, AND CYANCOLORED IMAGES IN SEPARATE LAYERS BY COUPLING WITH THE DEVELOPMENT PRODUCT OF A PRIMARY AMINO DEVELOPING AGENT AND WHEREIN THE COLOR FORMER WHICH IS ADAPTED TO FORM A MAGNETA IMAGE CONTAINS IN ITS MOLECULAR STRUCTURE A REACTIVE METHYLENE GROUP, WHICH COMPRISES THE STEPS OF EXPOSING THE FILM TO LIGHT, COLOR DEVELOPING TO SAID COLORED IMAGES BY TREATING SAID LAYERS WITH SAID PRIMARY AMINO DEVELOPING AGENT, AND SUBSEQUENTLY TREATING THE FILM WITH AN AROMATIC ALDEHYDE CONTAINING AN AUXOCHROMIC GROUP WHEREUPON A YELLOW STYRYL DYESTUFF MASKING IMAGE IS OBTAINED IN THE MAGENTA COLORED LAYER AND RETAINING THE COLORED IMAGES AND MASKING IMAGE IN SAID LAYERS.
Claim 2
Dependent Claim
132 words
A PROCESS FOR THE PRODUCTION OF A COLOR-CORRECTED PHOTOGRAPHIC TRANSPARENCY FROM MULTILAYER FILM HAVING DIFFERENTLY SENSITIZED SILVER HALIDE EMULSION LAYERS CONTAINING COLOR FORMERS ADAPTED TO YIELD YELLOW, MAGENTA, AND CYANCOLORED IMAGES IN SEPARATE LAYERS BY COUPLING WITH THE DEVELOPMENT PRODUCT OF A PRIMARY AMINO DEVELOPING AGENT AND WHEREIN THE COLOR FORMER WHICH IS ADAPTED TO FORM A MAGNETA IMAGE CONTAINS IN ITS MOLECULAR STRUCTURE A REACTIVE METHYLENE GROUP, WHICH COMPRISES THE STEPS OF EXPOSING THE FILM TO LIGHT, COLOR DEVELOPING TO SAID COLORED IMAGES BY TREATING SAID LAYERS WITH SAID PRIMARY AMINO DEVELOPING AGENT, AND SUBSEQUENTLY TREATING THE FILM WITH AN AROMATIC ALDEHYDE CONTAINING AN AUXOCHROMIC GROUP WHEREUPON A YELLOW STYRYL DYESTUFF MASKING IMAGE IS OBTAINED IN THE MAGENTA COLORED LAYER AND RETAINING THE COLORED IMAGES AND MASKING IMAGE IN SAID LAYERS.
Claim 3
Dependent Claim
87 words
A COLORED MULTILAYER PHOTOGRAPHIC ELEMENT WHICH COMPRISES A BASE HAVING SUPERIMPOSED THEREON THREE LAYERS, ONE OF SAID LAYERS CONTAINING A CYAN AZOMETHINE DYESTUFF IMAGE, THE SECOND OF SAID LAYERS CONTAINING A MAGENTA AZOMETHINE DYESTUFF IMAGE AND THE OTHER OF SAID LAYERS CONTAINING A YELLOW AZOMETHINE DYESTUFF IMAGE, SAID ELEMENT BEING CHARACTERIZED IN THAT THE LAYER WHICH CONTAINS THE MAGNETA IMAGE ALSO CONTAINS A YELLOW STYRYL DYESTUFF MASKING IMAGE SAID MASKING IMAGE POSSESSING THE PROPERTY OF BEING DISCHARGEABLE WITHOUT APPRECIABLY AFFECTING THE OTHER COLOR IMAGES IN SAID ELEMENT.
Claim 4
Dependent Claim
87 words
A COLORED MULTILAYER PHOTOGRAPHIC ELEMENT WHICH COMPRISES A BASE HAVING SUPERIMPOSED THEREON THREE LAYERS, ONE OF SAID LAYERS CONTAINING A CYAN AZOMETHINE DYESTUFF IMAGE, THE SECOND OF SAID LAYERS CONTAINING A MAGENTA AZOMETHINE DYESTUFF IMAGE AND THE OTHER OF SAID LAYERS CONTAINING A YELLOW AZOMETHINE DYESTUFF IMAGE, SAID ELEMENT BEING CHARACTERIZED IN THAT THE LAYER WHICH CONTAINS THE MAGNETA IMAGE ALSO CONTAINS A YELLOW STYRYL DYESTUFF MASKING IMAGE SAID MASKING IMAGE POSSESSING THE PROPERTY OF BEING DISCHARGEABLE WITHOUT APPRECIABLY AFFECTING THE OTHER COLOR IMAGES IN SAID ELEMENT.
References Cited (Backward Citations)
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Cited
US2306410A
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US2357388A
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US2431996A
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US2449966A
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US2518739A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |