US2964404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hardening of gelating with aziridinylsulfonyl compounds
Assignee: Eastman Kodak Co
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Filing: 1957-07-26
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Granted: 1960-12-13
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Expires: 1977-07-26
Abstract
No abstract record available.
Inventors
- 👤 Donald M Burness
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:48
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/30; G03C1/302
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
24 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SILVER HALIDEGELATIN PHOTOGRAPHIC EMULSION LAYER CONTAINING, PER 100 PARTS OF GELATIN, 0.1-5 PARTS OF A COMPOUND HAVING THE FORMULA:
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) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |