US2786803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation of petroleum
Assignee: Phillips Petroleum Co
•
Filing: 1952-01-03
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Granted: 1957-03-26
•
Expires: 1972-01-03
Abstract
No abstract record available.
Inventors
- 👤 William B Whitney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:54
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2203/00; C10N; C10N2060/00; C10N2060/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A PROCESS FOR PRODUCING OXIDIZED PETROLEUM PRODUCTS WHICH COMPRISES PASSING A PROPANE-FRACTIONATED, PHENOLEXTRACTED PTEROLUEM FRACTION HAVING A VISCOSITY IN THE RANGE 70 TO 700 SAYBOLT SECONDS AT 210* F. THROUGH A BED OF SILICA GEL; WASHING SAID SILICA GEL WITH A SATURATED ALIPHATIC HYDROCARBON HAVING A BOILING POINT BELOW THAT OF SAID PETROLUEM FRACTION; COMBINING THE PETROLEUM FRACTION OBTAINED BY SAID WASH WITH ANY PETROLEUM FRACTION UNADSROBED ON SAID SILICA GEL; SUBJECTING THE COMBINED PETROLEUM FRACTION TO CONTACT WITH AN OXIDIZING AGENT AT A TEMPERATURE WITHIN THE RANGE OF BETWEEN 380* F. AND 620* F.; AND RECOVERING RESULTING OXIDATION PRODUCTS FROM THE OXIDIZED COMBINED PETROLEUM FRACTION.
Claim 2
Dependent Claim
106 words
A PROCESS FOR PRODUCING OXIDIZED PETROLEUM PRODUCTS WHICH COMPRISES PASSING A PROPANE-FRACTIONATED, PHENOLEXTRACTED PTEROLUEM FRACTION HAVING A VISCOSITY IN THE RANGE 70 TO 700 SAYBOLT SECONDS AT 210* F. THROUGH A BED OF SILICA GEL; WASHING SAID SILICA GEL WITH A SATURATED ALIPHATIC HYDROCARBON HAVING A BOILING POINT BELOW THAT OF SAID PETROLUEM FRACTION; COMBINING THE PETROLEUM FRACTION OBTAINED BY SAID WASH WITH ANY PETROLEUM FRACTION UNADSROBED ON SAID SILICA GEL; SUBJECTING THE COMBINED PETROLEUM FRACTION TO CONTACT WITH AN OXIDIZING AGENT AT A TEMPERATURE WITHIN THE RANGE OF BETWEEN 380* F. AND 620* F.; AND RECOVERING RESULTING OXIDATION PRODUCTS FROM THE OXIDIZED COMBINED PETROLEUM FRACTION.
References Cited (Backward Citations)
US2365220A
Cited
US2352213A
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US2447794A
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US2572866A
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US2674568A
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US2632727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-25 | 1960-09-24 | 1961-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-25 | 1964-09-24 | 1965-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-25 | 1968-09-24 | 1969-03-26 | $7700.00 | Window Closed / Lapsed |