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Patent US2965680A successfully refreshed from Google Patents.
US2965680A
Expired / Lapsed
US
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Alcohol refining process
Assignee: Monsanto Chemicals Ltd
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Filing: 1957-07-03
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Granted: 1960-12-20
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Expires: 1977-07-03
Abstract
No abstract record available.
Inventors
- 👤 John W Andersen
- 👤 Robert A Heimsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:47
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74; C07C29/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
PROCESS FOR THE REFINING OF CRUDE ALCOHOLS OBTAINED BY THE OXONATION OF OLEFINS WITH CARBON MONOXIDE AND HYDROGEN, FOLLOWED BY HYDORGENATION TO TRANSFORM PRIMARY ALDEHYDES TO ALCOHOLS, WHICH COMPRISES CONTACTING THE SAID ALCOHOLS WITH A DRY SILICA-ALUMINA GEL IN WHICH THE PROPORTION OF SILICA IS FROM 40% TO 98% BY WEIGHT OF THE GEL WHEREBY THE IMPURITIES OF THE SAID CRUDE ALCOHOL ARE ADSORBED ON THE GEL, AND THEREAFTER SEPARATING THE TREATED ALCOHOL FROM THE SAID GEL.
Claim 2
Dependent Claim
77 words
PROCESS FOR THE REFINING OF CRUDE ALCOHOLS OBTAINED BY THE OXONATION OF OLEFINS WITH CARBON MONOXIDE AND HYDROGEN, FOLLOWED BY HYDORGENATION TO TRANSFORM PRIMARY ALDEHYDES TO ALCOHOLS, WHICH COMPRISES CONTACTING THE SAID ALCOHOLS WITH A DRY SILICA-ALUMINA GEL IN WHICH THE PROPORTION OF SILICA IS FROM 40% TO 98% BY WEIGHT OF THE GEL WHEREBY THE IMPURITIES OF THE SAID CRUDE ALCOHOL ARE ADSORBED ON THE GEL, AND THEREAFTER SEPARATING THE TREATED ALCOHOL FROM THE SAID GEL.
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) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |