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US2631970A
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Method for purification of alcohols containing oxidizable impurities
Assignee: Stanolind Oil and Gas Co
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Filing: 1949-09-24
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Granted: 1953-03-17
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Expires: 1969-09-24
Abstract
No abstract record available.
Inventors
- 👤 David K Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 05:15
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A METHOD FOR THE PURIFICATION OF ALCOHOLS PRODUCED BY THE REDUCTION OF CARBON MONOXIDE WITH HYDROGEN, SAID ALCOHOLS BEING NEGATIVE TO THE FUCHSIN ALDEHYDE TEST BUT WHICH CONTAIN IMPURITIES OXIDIZABLE BY PERMANGANATE COMPRISING MIXING WITH THE IMPURE ALCOHOL AT LEAST ABOUT 0.01 WEIGHT PER CENT OF AN ALPHA HYDROXYLAMINE COMPOUND AND THEREAFTER DISTILLING THE RESULTING MIXTURE TO OBTAIN AN ALCOHOL FREE FROM SAID OXIDIZABLE CONTAMINANTS.
Claim 2
Independent Claim
65 words
A METHOD FOR THE PURIFICATION OF ALCOHOLS PRODUCED BY THE REDUCTION OF CARBON MONOXIDE WITH HYDROGEN, SAID ALCOHOLS BEING NEGATIVE TO THE FUCHSIN ALDEHYDE TEST BUT WHICH CONTAIN IMPURITIES OXIDIZABLE BY PERMANGANATE COMPRISING MIXING WITH THE IMPURE ALCOHOL AT LEAST ABOUT 0.01 WEIGHT PER CENT OF AN ALPHA HYDROXYLAMINE COMPOUND AND THEREAFTER DISTILLING THE RESULTING MIXTURE TO OBTAIN AN ALCOHOL FREE FROM SAID OXIDIZABLE CONTAMINANTS.
References Cited (Backward Citations)
US625108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |