US3048487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Basic mordants derived from the reaction between maleic anhydride interpolymers and disubstituted diamines
Assignee: Eastman Kodak Co
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Filing: 1957-06-05
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Granted: 1962-08-07
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Expires: 1977-06-05
Abstract
No abstract record available.
Inventors
- 👤 Louis M Minsk
- 👤 Hyman L Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:54
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/22; G03C7/25; C; C08; C08F; C08F8/00; C08F8/48; G03C1/00; G03C1/76; G03C1/825; G03C1/835; C08F2800/00; C08F2800/10; C08F2800/20; C08F2810/00; C08F2810/50; Y; Y10; Y10S; Y10S430/00; Y10S430/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A LIGHT-SENSITIVE PHOTOGRAPHIC ELEMENT COMPRISING A FLEXIBLE SHEET SUPPORT HAVING INTEGRAL THEREWITH AT LEAST TWO GELATIN LAYERS, AT LEAST ONE OF SAID GELATIN LAYERS BEING A SILVER HALIDE EMULSION LAYER AND AT LEAST ONE OF SAID GELATIN LAYERS HAVING UNIFORMLY DISTRIBUTED THERETHROUGH AN ACID ADDITION SALT OF AN INTERPOLYMER A, SAID INTERPOLYMER A BEING OBTAINED BY REACTING (1) AT LEAST 75 PERCENT OF THE ANHYDRIDE GROUPS OF AN INTERPOLYMER B REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
76 words
A LIGHT-SENSITIVE PHOTOGRAPHIC ELEMENT COMPRISING A FLEXIBLE SHEET SUPPORT HAVING INTEGRAL THEREWITH AT LEAST TWO GELATIN LAYERS, AT LEAST ONE OF SAID GELATIN LAYERS BEING A SILVER HALIDE EMULSION LAYER AND AT LEAST ONE OF SAID GELATIN LAYERS HAVING UNIFORMLY DISTRIBUTED THERETHROUGH AN ACID ADDITION SALT OF AN INTERPOLYMER A, SAID INTERPOLYMER A BEING OBTAINED BY REACTING (1) AT LEAST 75 PERCENT OF THE ANHYDRIDE GROUPS OF AN INTERPOLYMER B REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |