US2742832A
Expired / Lapsed
US
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Controlling grain and contrast in color photography
Assignee: Eastman Kodak Co
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Filing: 1955-02-17
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Granted: 1956-04-24
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Expires: 1975-02-17
Abstract
No abstract record available.
Inventors
- 👤 Salminen Ilmari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:39
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A PROCESS FOR PREPARING COLORED PHOTOGRAPHIC IMAGES WHICH COMPRISES DEVELOPING AN EXPOSED SILVER HALIDE EMULSION LAYER WITH A COLOR DEVELOPING SOLUTION CONTAINING A PRIMARY AROMATIC AMINO SILVER HALIDE DEVELOPING AGENT, SAID DEVELOPMENT BEING CARRIED OUT IN THE PRESENCE OF BOTH IMAGE-FORMING COUPLER COMPOUND, AND A COMPETING COUPLER COMPOUND HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
52 words
A PROCESS FOR PREPARING COLORED PHOTOGRAPHIC IMAGES WHICH COMPRISES DEVELOPING AN EXPOSED SILVER HALIDE EMULSION LAYER WITH A COLOR DEVELOPING SOLUTION CONTAINING A PRIMARY AROMATIC AMINO SILVER HALIDE DEVELOPING AGENT, SAID DEVELOPMENT BEING CARRIED OUT IN THE PRESENCE OF BOTH IMAGE-FORMING COUPLER COMPOUND, AND A COMPETING COUPLER COMPOUND HAVING THE GENERAL FORMULA:
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) | 1959-04-24 | 1959-10-24 | 1960-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-24 | 1963-10-24 | 1964-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-24 | 1967-10-24 | 1968-04-24 | $7700.00 | Window Closed / Lapsed |