Patent US2907709A successfully refreshed from Google Patents.
US2907709A
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US
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Method of drying a deoiling solvent by contacting with a portion of dewaxed oil
Assignee: Phillips Petroleum Co
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Filing: 1956-04-11
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Granted: 1959-10-06
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Expires: 1976-04-11
Abstract
No abstract record available.
Inventors
- 👤 Bruce C Benedict
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:51
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/02; C10G73/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
104 words
A METHOD FOR RECOVERING A DRY WAX DEOILING DILUENT FROM A DEWAXED OIL-DILUENT MIXTURE COMPRISING FLASH VAPORIZING AT LEAST A PORTION OF SAID DILUENT FROM SAID MIXTURE, STEAM STRIPPING THE REMAINDER OF THE DILUENT FROM THE FLASH BOTTOMS, CONDENSING THE STEAM-STRIPPED DILUENT AND STEAM AND SEPARATING A DILUENT-RICH PHASE OF SUBSTANTIALY ONLY DILUENT CONTAINING DISSOLVED WATER AND A WATAER-RICH PHASE OF SUBSTANTIALLY ONLY WATER CONTAINING DISSOLVED DILUENT FROM THE CONDENSATE, WITHDRAWING DEWAXED OIL FREE OF DILUENT FROM THE STEAM STRIPPED OPERATION DIVIDING THIS WITHDRAW OIL ONTO TWO PORTIONS, CONTACTING SAID DILUENT-RICH PHASE WITH ONE PORTION OF THE WITHDRAWN DILUENT-FREE OIL, FROM THIS CONTACTING OPERA-
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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) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |