US3637833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of carboxylic acids
Assignee: Union Oil Company of California
•
Filing: 1967-12-21
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Granted: 1972-01-25
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Expires: 1987-12-21
Abstract
Abstract A PROCESS FOR PREPARATION OF CARBOXYLIC ACIDS COMPRISING REACTING AN OLEFIN, CARBON MONOXIDE AND WATER IN THE PRESENCE OF HYDROGEN AND A CATALYST COMPRISING RHODIUM.
Inventors
- 👤 Donald M Fenton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:20
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/10; C07C51/14
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) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |