US2882156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Basic mordants derived from the reaction of carbonyl containing polymers and aminoguanidine and their use
Assignee: Eastman Kodak Co
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Filing: 1955-12-19
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Granted: 1959-04-14
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Expires: 1975-12-19
Abstract
No abstract record available.
Inventors
- 👤 Louis M Minsk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:05
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/22; G03C7/25; C; C08; C08F; C08F16/00; C08F16/36; C08F8/00; C08F8/30; C08F8/32; G03C1/00; G03C1/005; G03C1/04; G03C1/76; G03C1/825; G03C1/835; Y; Y10; Y10S; Y10S430/00; Y10S430/142
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
68 words
A LIGHT-SENSITIVE PHOTOGRAPHIC ELEMENT COMPRISING A FLEXIBLE CELLULOSE ACETATE SHEET SUPPORT MATERIAL HAVING THEREON 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 DISTRIBUTED THEREIN A SUBSTANTIALLY WATER-INSOLUBLE SALT OF A WATER-SOLUBLE ACID DYE WITH A VINYL POLYMER CONSISTING OF FROM 50-85% BY WEIGHT OF THE FOLLOWING RECURRING STRUCTURAL UNIT:
References Cited (Backward Citations)
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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) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |