Patent US2534907A successfully refreshed from Google Patents.
US2534907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of purifying hydrocarbon liquids
Assignee: Wyeth Holdings LLC
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Filing: 1945-01-19
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Granted: 1950-12-19
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Expires: 1965-01-19
Abstract
No abstract record available.
Inventors
- 👤 Ham Garnet Philip
- 👤 Barnes Robert Bowling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:29
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/02; B; B01; B01J; B01J41/00; B01J41/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
56 words
A PROCESS FOR REMOVING IMPURITIES IN THE FORM OF METALLIC SUBSTANCES FROM HYDROCARBON LIQUIDS COMPRISING PASSING A NON-AQUEOUS LIQUID HYDROCARBON CONTAINING, AS AN IMPURITY, A COMPOUND OF A METAL WHICH HAS A RELATIVELY INSOLUBLE METAL HYDROXIDE THROUGH A BED OF AN ANION ACTIVE RESIN, WHICH RESIN IS POLARIZED BY MEANS OF A HIGH TENSION D.C. POTENTIAL
References Cited (Backward Citations)
US1377021A
Cited
US2045465A
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US2336542A
Cited
US2413844A
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US2351445A
Cited
US2367803A
Cited
US2341329A
Cited
US2368261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-18 | 1954-06-19 | 1954-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-18 | 1958-06-19 | 1958-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-18 | 1962-06-19 | 1962-12-19 | $7700.00 | Window Closed / Lapsed |