US3260665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation of difficultly oxidizable mercaptans
Assignee: Universal Oil Products Co
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Filing: 1964-10-23
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Granted: 1966-07-12
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Expires: 1984-10-23
Abstract
No abstract record available.
Inventors
- 👤 Urban Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:19
CPC Classifications
C; C10; C10G; C10G53/00; C10G53/02; C10G53/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A COMBINATION PROCESS FOR OXIDIZING IN CONTACT WITH PHTHALOCYANINE CATALYST A HYDROCARBON FRACTION CONTAINING DIFFICULTY OXIDIZABLE MERCAPTANS AND TOXINS FOR SAID CATALYST, WHICH COMPRISES PREWASHING SAID HYDROCARBON FRACTION WITH AN AQUEOUS SOLUTION CONTAINING FROM ABOUT 5% TO ABOUT 50% BY WEIGHT OF AN ALKALI METAL HYDROXIDE AND FROM ABOUT 5% TO ABOUT 40% BY WEIGHT OF ALCOHOL TO REMOVE AT LEAST A PORTION OF SAID TOXINS FROM SAID FRACTION, SAID DIFFICULTY OXIDAZABLE MERCAPTANS CONTAINED IN SAID FRACTION BEING SUBSTANTIALLY INSOLUBLE IN SAID COLUTION, SEPARATING THE RESULTANT SOLUTION CONTAINING TOXINS FROM THE HYDROCARBON FRACTION REDUCED IN TOXINS AND CONTAINING A PORTION OF SAID ALCOHOL, SUBJECTING THE SEPARATED ALCOHOL-CONTAINING HYDROCARBON FRACTION OF REDUCED TOXIN CONTENT TO OXIDATION IN CONTACT WITH SAID CATALYST, AND POSTWASHING THE RESULTANT OXIDIZED FRACTION WITH AT LEAST A PORTION OF SAID SOLUTION CONTAINING TOXINS TO RECOVER AT LEAST A PORTION OF THE ALCOHOL CONTENT OF SAID OXIDIZED FRACTION AND TO REGENERATE SAID SOLUTION.
Claim 2
Dependent Claim
155 words
A COMBINATION PROCESS FOR OXIDIZING IN CONTACT WITH PHTHALOCYANINE CATALYST A HYDROCARBON FRACTION CONTAINING DIFFICULTY OXIDIZABLE MERCAPTANS AND TOXINS FOR SAID CATALYST, WHICH COMPRISES PREWASHING SAID HYDROCARBON FRACTION WITH AN AQUEOUS SOLUTION CONTAINING FROM ABOUT 5% TO ABOUT 50% BY WEIGHT OF AN ALKALI METAL HYDROXIDE AND FROM ABOUT 5% TO ABOUT 40% BY WEIGHT OF ALCOHOL TO REMOVE AT LEAST A PORTION OF SAID TOXINS FROM SAID FRACTION, SAID DIFFICULTY OXIDAZABLE MERCAPTANS CONTAINED IN SAID FRACTION BEING SUBSTANTIALLY INSOLUBLE IN SAID COLUTION, SEPARATING THE RESULTANT SOLUTION CONTAINING TOXINS FROM THE HYDROCARBON FRACTION REDUCED IN TOXINS AND CONTAINING A PORTION OF SAID ALCOHOL, SUBJECTING THE SEPARATED ALCOHOL-CONTAINING HYDROCARBON FRACTION OF REDUCED TOXIN CONTENT TO OXIDATION IN CONTACT WITH SAID CATALYST, AND POSTWASHING THE RESULTANT OXIDIZED FRACTION WITH AT LEAST A PORTION OF SAID SOLUTION CONTAINING TOXINS TO RECOVER AT LEAST A PORTION OF THE ALCOHOL CONTENT OF SAID OXIDIZED FRACTION AND TO REGENERATE SAID SOLUTION.
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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) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |