Patent US3291624A successfully refreshed from Google Patents.
US3291624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acetylated derivatives of dialdehydes and of their hemiacetals as gelatin hardeners
Assignee: Eastman Kodak Co
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Filing: 1963-08-21
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Granted: 1966-12-13
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Expires: 1983-08-21
Abstract
No abstract record available.
Inventors
- 👤 Jeffreys Roy Arthur
- 👤 Donald M Burness
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:32
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/30; G03C1/301
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A COMPOSITION OF MATTER COMPOSED OF GELATIN CONTAINING A HARDENER SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
16 words
A COMPOSITION OF MATTER COMPOSED OF GELATIN CONTAINING A HARDENER SELECTED FROM THE GROUP CONSISTING OF
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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |