Patent US2897146A successfully refreshed from Google Patents.
US2897146A
Expired / Lapsed
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Distillation
Assignee: Phillips Petroleum Co
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Filing: 1954-12-13
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Granted: 1959-07-28
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Expires: 1974-12-13
Abstract
No abstract record available.
Inventors
- 👤 Paul M Waddill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:03
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
158 words
IN AS VACUUM DISTILLATION OF A HYDROCARBON RESIDUUM THE METHOD WHICH COMPRISES INTRODUCING SAID RESIDUUM INTO A LOWER PORTION OF AN UPRIGHT DISTILLATION ZONE; PASS ING VAPORS FORMED FROM FLASH VAPORIZATION OF SAID RESIDUUM IN SAID ZONE UPWARDLY TO A POINT ABOVE A FIRST LIQUID COLLECTING MEANS AND ABOVE SAID MEANS INTO UNOBSTRUCTED CONTACT WITH A VERTICALLY EXTENDED LATERALLY DIRECTED COOLING SPRAY SO AS TO CONDENSE AT LEAST A PORTION OF SAID VAPORS INTO SAID FIRST LIQUID COLLECTING MEANS; PASSING REMAINING UNCONDENSED VAPORS UPWARDLY TO A POINT ABOVE A SECOND LIQUID COLLECTING MEANS AND ABOVE SAID SECOND LIQUID COLLECTING MEANS INTO CONTACT WITH A CONDENSING SPRAY TO CONDENSE REMAINING VAPORS; COLLECTING CONDENSATE IN A CONDENSATE COLLECTOR MEANS DISPOSED BE NEATH SAID CONDENSING SPRAY AND SO ADAPTED AND ARRANGED AS TO TRANSFER SAID COLLECTD CONDENSATE TO SAID SECOND LIQUID COLLECTING MEANS WHILE PREVENTING CONTACT OF UPWARDLY RISING VAPORS WITH SAID CONDENSATE BEING TRANSFERRED; TRANSFERRING SAID COLLECTED CONDENSATE FROM SAID
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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) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |