Patent US2058844A successfully refreshed from Google Patents.
US2058844A
Expired / Lapsed
US
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Hydrolysis of the organic esters of inorganic acids
Assignee: Carbide and Carbon Chemicals Corp
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Filing: 1936-02-19
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Granted: 1936-10-27
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Expires: 1956-02-19
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Vaughn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:38
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/50; D06M13/503; D06M13/507; C; C09; C09K; C09K23/00; C09K23/16
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) | 1939-10-27 | 1940-04-27 | 1940-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-10-27 | 1944-04-27 | 1944-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-10-27 | 1948-04-27 | 1948-10-27 | $7700.00 | Window Closed / Lapsed |