US3215623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of immiscible liquid contaminants from fluids
Assignee: Phillips Petroleum Co
•
Filing: 1962-01-02
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Granted: 1965-11-02
•
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 15:04
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
Cited
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 |