Patent US3215623A successfully refreshed from Google Patents.
US3215623A
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Removal of immiscible liquid contaminants from fluids
Assignee: Phillips Petroleum Co
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Filing: 1962-01-02
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Granted: 1965-11-02
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Expires: 1982-01-02
Abstract
No abstract record available.
Inventors
- 👤 Marvin C Hix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:47
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/0202; Y; Y10; Y10S; Y10S526/00; Y10S526/912
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A PROCESS FOR REMOVING A CONTAMINATING LIQUID OIL FROM AN AQUEOUS SOLUTION OF A COPPER AMMONIUM SALT, WHICH PROCESS COMPRISES: PASSING SAID AQUEOUS SOLUTION CONTAINING SAID OIL TO A CONTACTING ZONE AND THEREIN CONTACTING SAME WITH A POROUS, GRANULAR, PRECIPITATED POLYETHYLENE; AND RECOVERING A SUBSTANTIALLY OIL-FREE COPPER AMMONIUM SALT SOLUTION FROM SAID CONTACTING ZONE.
Claim 2
Dependent Claim
54 words
A PROCESS FOR REMOVING A CONTAMINATING LIQUID OIL FROM AN AQUEOUS SOLUTION OF A COPPER AMMONIUM SALT, WHICH PROCESS COMPRISES: PASSING SAID AQUEOUS SOLUTION CONTAINING SAID OIL TO A CONTACTING ZONE AND THEREIN CONTACTING SAME WITH A POROUS, GRANULAR, PRECIPITATED POLYETHYLENE; AND RECOVERING A SUBSTANTIALLY OIL-FREE COPPER AMMONIUM SALT SOLUTION FROM SAID CONTACTING ZONE.
References Cited (Backward Citations)
US1748051A
Cited
US2600106A
Cited
US2849082A
Cited
GB829413A
Cited
US2858902A
Cited
US3056772A
Cited
US3068627A
Cited
US2965445A
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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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |