US1826608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of cellulose acetate or products made therewith
Assignee: Celanese Corp
•
Filing: 1926-08-23
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Granted: 1931-10-06
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Expires: 1946-08-23
Abstract
No abstract record available.
Inventors
- 👤 Ellis George Holland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:40
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/01; D06M15/17; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/921
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1934-10-05 | 1935-04-06 | 1935-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-10-05 | 1939-04-06 | 1939-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-10-05 | 1943-04-06 | 1943-10-06 | $7700.00 | Window Closed / Lapsed |