Patent US932837A successfully refreshed from Google Patents.
Patent US3816488A successfully refreshed from Google Patents.
US3816488A
Expired / Lapsed
US
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Increasing the selectivity and yield in the production of carboxylic acids
Assignee: Monsanto Co
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Filing: 1970-07-01
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Granted: 1974-06-11
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Expires: 1990-07-01
Abstract
Abstract THE PRESENT INVENTION RELATES TO AN IMPROVED PROCESS FOR THE PRODUCTION OF CARBOXYLIC ACIDS, SPECIFICALLY BY THE REACTION OF ETHYLENICLLY UNSATURATED COMPOUNDS WITH CARBON MONOXIDE AND WATER, IN THE PRESENCE OF CATALYST COMPOSITIONS ESSENTIALLY COMPRISING RHODIUM COMPOUNDS AND COMPLEXES, TOGETHER WITH AN IODIDE PROMOTER IN CRITICAL PROPORTIONS. THE PROCESS IS PARTICULARLY USEFUL FOR PRODUCTION OF TERMINAL CARBOXYLIC ACIDS.
Inventors
- 👤 J Craddock
- 👤 A Hershman
- 👤 F Paulik
- 👤 J Roth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:27
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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |