US3813331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Demetalation of hydrocarbon charge stocks with manganese nodule catalyst
Assignee: Mobil Oil AS
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Filing: 1972-10-25
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Granted: 1974-05-28
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Expires: 1992-10-25
Abstract
Abstract THIS SPECIFICATION DISCLOSES A PROCESS FOR THE DEMETALATION OF HYDROCARBON CHARGE STOCKS CONTAINING METAL IMPURITIES. THE PROCESS COMPRISES CONTACTING SAID HYDROCARBON CHARGE STOCK WITH HYDROGEN AND WITH A CATALYST COMPRISING SALT WATER MANGANESE NODULES. THESE NODULES HAVE BEEN PREVIOUSLY WASHED WITH WATER HAVING A TEMPERATURE OF AT LEAST 125*F. AND A TOTAL SALTS CONTENT OF NOR MORE THAN 1000 PARTS PER MILLION OF A TIME SUFFICIENT TO INCREASE THE ACCESSIBLE SURFACE AREA OF THE NODULES.
Inventors
- 👤 P Weisz
- 👤 A Silvestri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:16
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/06; B01J23/00; B01J23/16; B01J23/32; B01J23/34; C; C10; C10G; C10G2300/00; C10G2300/10; C10G2300/107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |