US3525734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of cellulose triacetate having good characteristics
Assignee: Rhodiaceta SA
•
Filing: 1969-04-03
•
Granted: 1970-08-25
•
Expires: 1989-04-03
Abstract
No abstract record available.
Inventors
- 👤 Andre Rajon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:53
CPC Classifications
C; C08; C08B; C08B3/00; C08B3/22; C08B3/26; C08B3/28; C08B3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2036397A
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US2230387A
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US2264828A
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US2418211A
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US2805171A
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US2843583A
Cited
US3109743A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |