US2480949A
Expired / Lapsed
US
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Viscous water-soluble cellulose ether solutions and process for making same
Assignee: Carbide and Carbon Chemicals Corp
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Filing: 1946-02-06
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Granted: 1949-09-06
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Expires: 1966-02-06
Abstract
No abstract record available.
Inventors
- 👤 Charles R W Morison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:08
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/10; D21H19/12; C; C08; C08L; C08L1/00; C08L1/08; C08L1/26; C08L1/28; C09; C09D; C09D101/00; C09D101/08; C09D101/26; D06; D06M; D06M15/00; D06M15/01; D06M15/03; D06M15/05; D06M15/09
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) | 1952-09-05 | 1953-03-07 | 1953-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-05 | 1957-03-07 | 1957-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-05 | 1961-03-07 | 1961-09-06 | $7700.00 | Window Closed / Lapsed |