Patent DE513865C successfully refreshed from Google Patents.
Patent US1883412A successfully refreshed from Google Patents.
US1883412A
Expired / Lapsed
US
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Application of cellulose esters and ethers
Assignee: Celanese Corp
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Filing: 1926-07-23
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Granted: 1932-10-18
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Expires: 1946-07-23
Abstract
No abstract record available.
Inventors
- 👤 Schneider George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:44
CPC Classifications
B; B05; B05D; B05D5/00; B05D5/06; B44; B44F; B44F9/00; B44F9/10; C; C09; C09D; C09D101/00; C09D101/08; Y; Y10; Y10S; Y10S428/00; Y10S428/904; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31975; Y10T428/31978; Y10T428/31986; Y10T442/00; Y10T442/20; Y10T442/259; Y10T442/2598
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) | 1935-10-18 | 1936-04-18 | 1936-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-10-18 | 1940-04-18 | 1940-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-10-18 | 1944-04-18 | 1944-10-18 | $7700.00 | Window Closed / Lapsed |