US3475356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent resistant cross-linked polymers derived from cellulose esters
Assignee: Eastman Kodak Co
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Filing: 1966-01-27
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Granted: 1969-10-28
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Expires: 1986-01-27
Abstract
No abstract record available.
Inventors
- 👤 John H Davis
- 👤 Charles H Coney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:12
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6216; C08G18/625; C08G18/4009; C08G18/4045; C08G18/4081; C08G18/54; C08G18/544; C08G18/64; C08G18/6484; C08G18/65; C08G18/6505; C08G18/6511; C08G2380/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2729618A
Cited
US2981712A
Cited
US3213046A
Cited
US3386932A
Cited
US3362921A
Cited
US3386931A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |