Patent US2844612A successfully refreshed from Google Patents.
US2844612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of esters from carbon monoxide, hydrogen, and olefin
Assignee: Ruhrchemie AG
•
Filing: 1953-11-05
•
Granted: 1958-07-22
•
Expires: 1973-11-05
Abstract
No abstract record available.
Inventors
- 👤 Rottig Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:56
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/78
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A PROCESS FOR THE PRODUCTION OF ESTERS WHICH COMPRISES CONTACTING AN OLEFINIC HYDROCARBON HAVING A CARBON NUMBER ABOVE C20 AND BOILING ABOVE 320*C. WITH A CARBON MONOXIDE HYDROGEN-CONTAINING GAS HAVING A CO:H2 RATIO OF ABOUT 2:1 TO ABOUT 50:1 AT A TEMPERATURE OF 100-200* C. AND A PRESSURE OF BETWEEN 100 AND 300 ATMOSPHERES IN THE PRESENCE OF AN OXO-CATALYST, AND RECOVERING AN ESTER.
Claim 2
Dependent Claim
64 words
A PROCESS FOR THE PRODUCTION OF ESTERS WHICH COMPRISES CONTACTING AN OLEFINIC HYDROCARBON HAVING A CARBON NUMBER ABOVE C20 AND BOILING ABOVE 320*C. WITH A CARBON MONOXIDE HYDROGEN-CONTAINING GAS HAVING A CO:H2 RATIO OF ABOUT 2:1 TO ABOUT 50:1 AT A TEMPERATURE OF 100-200* C. AND A PRESSURE OF BETWEEN 100 AND 300 ATMOSPHERES IN THE PRESENCE OF AN OXO-CATALYST, AND RECOVERING AN ESTER.
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) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |