US3769326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of carboxylic acids and esters
Assignee: Monsanto Co
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Filing: 1971-03-26
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Granted: 1973-10-30
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Expires: 1991-03-26
Abstract
Abstract THE PRESENT INVENTION RELATES TO A PROCESS FOR THE PREPARATION OF AROMATIC CARBOXYLIC ACIDS AND ESTERS, SPECIFICALLY BY THE REACTION OF AROMATIC ALCOHOLS AND THE ESTER, ETHER AND HALIDE DERIVATIVES THEREOF WITH CARBON MONOXIDE IN THE PRESENCE OF CATALYST SYSTEMS CONTAINING AS ACTIVE CONSTITUENTS A RHODIUM COMPONENT AND A HALOGEN COMPONENT. THE PROCESS IS ALSO DIRECTED TO THE PRODUCTION OF MIXTURES OF SUCH ACIDS AND/OR THEIR ESTERS.
Inventors
- 👤 J Roth
- 👤 W Knox
- 👤 F Paulik
- 👤 A Hershman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:12
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/10; C07C51/12
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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |