Patent US2934491A successfully refreshed from Google Patents.
US2934491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stripping still-dephlegmator operation
Assignee: Phillips Petroleum Co
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Filing: 1957-10-28
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Granted: 1960-04-26
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Expires: 1977-10-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Everett S Palmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:15
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A PROCESS COMPRISING WITHDRAWING HOT DEPHLEGMATOR OIL CONTAINING ENTRAINED WATER AND OTHER VAPORIZABLE MATERIAL AND AT ITS BOILING POINT FROM A LOWER PORTION OF A DEPHLEGMATION ZONE, INTRODUCING THIS WITHDRAWN HOT OIL INTO A PHASE SEPARATION ZONE AND THEREIN SEPARATING A VAPRO PHASE FROM A LIQUID OIL PHASE, PASSING THE SEPARATED VAPOR PHASE INTO THE UPPER PORTION OF SAID DEPHIEGMATION ZONE, WITHDRAWING SEPARATED LIQUID OIL FROM SAID LIQUID BY JET ACTION INTO THE UPPER PORTION OF A LOW PRESSURE DISTILLATION ZONE.
Claim 2
Dependent Claim
81 words
A PROCESS COMPRISING WITHDRAWING HOT DEPHLEGMATOR OIL CONTAINING ENTRAINED WATER AND OTHER VAPORIZABLE MATERIAL AND AT ITS BOILING POINT FROM A LOWER PORTION OF A DEPHLEGMATION ZONE, INTRODUCING THIS WITHDRAWN HOT OIL INTO A PHASE SEPARATION ZONE AND THEREIN SEPARATING A VAPRO PHASE FROM A LIQUID OIL PHASE, PASSING THE SEPARATED VAPOR PHASE INTO THE UPPER PORTION OF SAID DEPHIEGMATION ZONE, WITHDRAWING SEPARATED LIQUID OIL FROM SAID LIQUID BY JET ACTION INTO THE UPPER PORTION OF A LOW PRESSURE DISTILLATION ZONE.
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) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |