US2589018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distillation of oxo alcohols
Assignee: Standard Oil Development Co
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Filing: 1948-12-31
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Granted: 1952-03-11
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Expires: 1968-12-31
Abstract
No abstract record available.
Inventors
- 👤 Charles E Morrell
- 👤 Frank A Biribauer
- 👤 Carl S Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:47
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74; C07C29/76; C07C29/80
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
121 words
AN IMPROVED CONTINUOUS DISTILLATION PROCESS FOR THE PURIFICATION OF A CRUDE ALCOHOL CONTAINING HIGH-BOILING IMPURITIES AND OBTAINED BY THE REACTION OF OLEFINS WITH CARBON MONOXIDE AND HYDROGEN AND SUBSEQUENT HYDROGENATION OF THE ALDEHYDES RESULTING THEREFROM, WHICH COMPRISES FEEDING THE SAID CRUDE ALCOHOL INTO AN INITIAL FRACTIONATION ZONE, MAINTAINING THE BOTTOMS TEMPERATURE IN SAID INITIAL FRACTIONATION ZONE SUBSTANTIALLY ABOVE THE NORMAL BOILING POINT OF THE ALCOHOL, MAINTAINING CONTINUOUS REFLUX WITHIN THE INITIAL FRACTIONATION ZONE, REMOVING AN ALCOHOL-RICH VAPOR STREAM ESSENTIALLY FREE OF HIGHERBOILING UNSTABLE IMPURITIES FROM SAID INITIAL FRACTIONATION ZONE, PASSING SAID ALCOHOL-RICH VAPOR STREAM IMMEDIATELY INTO A SECOND FRACTIONATION ZONE, REMOVING AS AN OVERHEAD VAPOR STREAM SUBSTANTIALLY ALL VOLATILES BOILING BELOW THE ALCOHOL FROM AN UPPER PORTION OF SAID SECOND FRAC-
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) | 1955-03-11 | 1955-09-10 | 1956-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-11 | 1959-09-10 | 1960-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-11 | 1963-09-10 | 1964-03-11 | $7700.00 | Window Closed / Lapsed |