Patent US2333756A successfully refreshed from Google Patents.
US2333756A
Expired / Lapsed
US
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Process for the recovery of lower aliphatic acids from aqueous solutions
Assignee: Vulcan Copper and Supply Co
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Filing: 1940-11-09
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Granted: 1943-11-09
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Expires: 1960-11-09
Abstract
No abstract record available.
Inventors
- 👤 Theodore O Wentworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:19
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/42; C07C51/48; C07C51/43; C07C51/44; C07C51/46
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) | 1946-11-08 | 1947-05-10 | 1947-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-11-08 | 1951-05-10 | 1951-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-11-08 | 1955-05-10 | 1955-11-09 | $7700.00 | Window Closed / Lapsed |