US2647150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of alcohols from mercaptans
Assignee: Pure Oil Co
•
Filing: 1948-03-10
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Granted: 1953-07-28
•
Expires: 1968-03-10
Abstract
No abstract record available.
Inventors
- 👤 Robert J Askevold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:01
CPC Classifications
C; C07; C07C; C07C319/00; C07C319/26; C07C319/28; C07C29/00; C07C29/74; C07C29/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
THE METHOD OF RECOVERING FRACTIONS SUBSTANTIALLY RICHER IN ALIPHATIC ALCOHOL AND FRACTIONS SUBSTANTIALLY RICHER IN ALIPHATIC MERCAPTAN FROM A MIXTURE AT SAME, COMPRISING PERCOLATINGG SAID MIXTURE AT AMBIENT TEMPERATURE THROUGH AN AMOUNT OF A GRANULAR ADSORBENT SUFFICIENT TO ADSORB A SUBSTANTIAL PORTION OF THE ALCOHOL FROM THE MIXTURE, CONTINUING SAID PERCOLATION FOR A TIME SUFFICIENT TO SATURATE SAID ADSORBENT WITH SAID MIXTURE AND RECOVERING EFFLUENT FRACTIONS SUBSTANTIALLY RICHER IN ALIPHATIC MERCAPTAN UNTIL THE ALIPHATIC ALCOHOL CONTENT THEREOF SHOWS A SUBSTANTIAL INCREASE, THEREAFTER DISCONTINUING SAID PERCOLATION, SEPARATING SAID SPENT ADSORBENT FROM SAID MIXTURE, ELUTING SAID ADSORBENT WITH A LIQUID SELECTED FROM THE GROUP CONSISTING OF AN ALCOHOL OF LOWER MOLECULAR WEIGHT THAN THE ALIPHATIC ALCOHOL IN SAID MIXTURE AND WATER, TO THEREBY OBTAIN FRACTIONS SUBSTANTIALLY RICHER IN ALIPHATIC ALCOHOL THEN SAID MIXTURE.
Claim 2
Independent Claim
131 words
THE METHOD OF RECOVERING FRACTIONS SUBSTANTIALLY RICHER IN ALIPHATIC ALCOHOL AND FRACTIONS SUBSTANTIALLY RICHER IN ALIPHATIC MERCAPTAN FROM A MIXTURE AT SAME, COMPRISING PERCOLATINGG SAID MIXTURE AT AMBIENT TEMPERATURE THROUGH AN AMOUNT OF A GRANULAR ADSORBENT SUFFICIENT TO ADSORB A SUBSTANTIAL PORTION OF THE ALCOHOL FROM THE MIXTURE, CONTINUING SAID PERCOLATION FOR A TIME SUFFICIENT TO SATURATE SAID ADSORBENT WITH SAID MIXTURE AND RECOVERING EFFLUENT FRACTIONS SUBSTANTIALLY RICHER IN ALIPHATIC MERCAPTAN UNTIL THE ALIPHATIC ALCOHOL CONTENT THEREOF SHOWS A SUBSTANTIAL INCREASE, THEREAFTER DISCONTINUING SAID PERCOLATION, SEPARATING SAID SPENT ADSORBENT FROM SAID MIXTURE, ELUTING SAID ADSORBENT WITH A LIQUID SELECTED FROM THE GROUP CONSISTING OF AN ALCOHOL OF LOWER MOLECULAR WEIGHT THAN THE ALIPHATIC ALCOHOL IN SAID MIXTURE AND WATER, TO THEREBY OBTAIN FRACTIONS SUBSTANTIALLY RICHER IN ALIPHATIC ALCOHOL THEN SAID MIXTURE.
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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) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |