US3485816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for hydrolyzing cellulose triesters without viscosity loss and for manufacturing toluene soluble cellulose butyrate
Assignee: Eastman Kodak Co
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Filing: 1967-05-01
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Granted: 1969-12-23
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Expires: 1987-05-01
Abstract
No abstract record available.
Inventors
- 👤 Carlton L Crane
- 👤 Carl J Malm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:53
CPC Classifications
C; C09; C09D; C09D101/00; C09D101/08; C09D101/10; C08; C08B; C08B3/00; C08B3/08; C08B3/10; C08B3/22; C08B3/24; C09D101/14
Claims Analysis
Total Claims: 0
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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) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |