Patent US2575989A successfully refreshed from Google Patents.
US2575989A
Expired / Lapsed
US
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Treatment of petroleum distillates
Assignee: Standard Oil Development Co
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Filing: 1949-09-03
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Granted: 1951-11-20
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Expires: 1969-09-03
Abstract
No abstract record available.
Inventors
- 👤 Arundale Erving
- 👤 John P Thorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:57
CPC Classifications
C; C10; C10G; C10G29/00; C10G29/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
PROCESS FOR THE CONVERSION OF MERCAPTAN COMPOUNDS IN A PETROLEUM OIL CONTAINING THE SAME INTO RELATIVELY INNOCUOUS COMPOUNDS WHICH COMPRISES CONTACTING SAID PETROLEUM OIL WITH AN ALKYLENE OXIDE IN THE PRESENCE OF AN ALKALINE CATALYST, SAID ALKYLENE OXIDE BEING SELECTED FROM THE CLASS OF COMPOUNDS REPRESENTED BY THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
50 words
PROCESS FOR THE CONVERSION OF MERCAPTAN COMPOUNDS IN A PETROLEUM OIL CONTAINING THE SAME INTO RELATIVELY INNOCUOUS COMPOUNDS WHICH COMPRISES CONTACTING SAID PETROLEUM OIL WITH AN ALKYLENE OXIDE IN THE PRESENCE OF AN ALKALINE CATALYST, SAID ALKYLENE OXIDE BEING SELECTED FROM THE CLASS OF COMPOUNDS REPRESENTED BY THE STRUCTURAL FORMULA
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) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |