Patent US2909538A successfully refreshed from Google Patents.
US2909538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of hydroxy acids
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1957-12-10
•
Granted: 1959-10-20
•
Expires: 1977-12-10
Abstract
No abstract record available.
Inventors
- 👤 Kirshenbaum Isidor
- 👤 Vincent L Hughes
- 👤 Fred W Banes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:59
CPC Classifications
C; C07; C07C; C07C59/00; C07C59/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A PROCESS FOR THE PRODUCTION OF HYDROXY ACIDS WHICH COMPRISES REACTING AN UNSATURATED CARBOXYLIC ACID WITH CARBON MONOXIDE AND HYDROGEN IN THE PRESENCE OF A CARBONYLATION CATALYST AT A TEMPERATURE BETWEEN 100200*C. AND A PRESSURE OF FROM 1500 TO 7500 P.S.I.G. ALSO IN THE PRESENCE OF A NON-TERTIARY ALCOHOL CONTAINING FROM 3 TO 8 CARBON ATOMS, SAID ALCOHOL BEING PRESENT IN AN AMOUNT FROM C.5 TO 5 VOLUMES PER VOLUME OF UNSATURATED CARBOXYLIC ACID, AND RECOVERING A PRODUCT CONTAINING SUBSTANTIAL AMOUNTS OF HYDROXY ACIDS.
Claim 2
Dependent Claim
84 words
A PROCESS FOR THE PRODUCTION OF HYDROXY ACIDS WHICH COMPRISES REACTING AN UNSATURATED CARBOXYLIC ACID WITH CARBON MONOXIDE AND HYDROGEN IN THE PRESENCE OF A CARBONYLATION CATALYST AT A TEMPERATURE BETWEEN 100200*C. AND A PRESSURE OF FROM 1500 TO 7500 P.S.I.G. ALSO IN THE PRESENCE OF A NON-TERTIARY ALCOHOL CONTAINING FROM 3 TO 8 CARBON ATOMS, SAID ALCOHOL BEING PRESENT IN AN AMOUNT FROM C.5 TO 5 VOLUMES PER VOLUME OF UNSATURATED CARBOXYLIC ACID, AND RECOVERING A PRODUCT CONTAINING SUBSTANTIAL AMOUNTS OF HYDROXY ACIDS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |