US2663679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extractive distillation of alcohols obtained from olefins
Assignee: Standard Oil Development Co
•
Filing: 1948-12-31
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Granted: 1953-12-22
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Expires: 1968-12-31
Abstract
No abstract record available.
Inventors
- 👤 Jr William M Drout
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:41
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/34; B01D3/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
THE METHOD OF REFINING A CRUDE C2-C5 ALIPHATIC ALCOHOL PRODUCED BY REACTION OF A MONOOLEFIN, SAID CRUDE ALCOHOL CONTAINING CONTAMINANTS LOWER BOILING AND HIGHER BOILING THAN THE ALCOHOL, SOME OF SAID HIGHER BOILING IMPURITIES BEING VAPORIZED WITH WATER UNDER DISTILLATION CONDITIONS HEREINAFTER MENTIONED AND SOME OF SAID HIGHER BOILING IMPURITIES BEING NON-VAPORIZABLE UNDER SAID CONDITIONS, WHICH COMPRISES INTRODUCING THE CRUDE ALCOHOL TO A FRACTIONAL DISTILLATION ZONE AT AN INTERMEDIATE POINT THEREOF, INTRODUCING SUFFICIENT WATER AT A TEMPERATURE OF 20-95* C. TO FRACTIONAL DISTILLATION ZONE AT A POINT SUBSTANTIALLY ABOVE THE CRUDE ALCOHOL FEED POINT TO MAINTAIN AN INTERNAL LIQUID REFLUX HAVING A WATER CONTENT IN THE RANGE OF 65 TO 99.9 MOL PER CENT WATER BELOW THE POINT OF ADDITION OF THE WATER, DISTILLING FROM SAID CRUDE ALCOHOL A VAPOROUS MIXTURE COMPRISING WATER, THE LOWER BOILING IMPURITIES AND THE HIGHER BOILING IMPURITIES WHICH VAPORIZE WITH WATER UNDER THE DISTILLATION CONDITIONS WHEREIN
Claim 2
Independent Claim
151 words
THE METHOD OF REFINING A CRUDE C2-C5 ALIPHATIC ALCOHOL PRODUCED BY REACTION OF A MONOOLEFIN, SAID CRUDE ALCOHOL CONTAINING CONTAMINANTS LOWER BOILING AND HIGHER BOILING THAN THE ALCOHOL, SOME OF SAID HIGHER BOILING IMPURITIES BEING VAPORIZED WITH WATER UNDER DISTILLATION CONDITIONS HEREINAFTER MENTIONED AND SOME OF SAID HIGHER BOILING IMPURITIES BEING NON-VAPORIZABLE UNDER SAID CONDITIONS, WHICH COMPRISES INTRODUCING THE CRUDE ALCOHOL TO A FRACTIONAL DISTILLATION ZONE AT AN INTERMEDIATE POINT THEREOF, INTRODUCING SUFFICIENT WATER AT A TEMPERATURE OF 20-95* C. TO FRACTIONAL DISTILLATION ZONE AT A POINT SUBSTANTIALLY ABOVE THE CRUDE ALCOHOL FEED POINT TO MAINTAIN AN INTERNAL LIQUID REFLUX HAVING A WATER CONTENT IN THE RANGE OF 65 TO 99.9 MOL PER CENT WATER BELOW THE POINT OF ADDITION OF THE WATER, DISTILLING FROM SAID CRUDE ALCOHOL A VAPOROUS MIXTURE COMPRISING WATER, THE LOWER BOILING IMPURITIES AND THE HIGHER BOILING IMPURITIES WHICH VAPORIZE WITH WATER UNDER THE DISTILLATION CONDITIONS WHEREIN
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |