Patent US3751380A successfully refreshed from Google Patents.
US3751380A
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Method of preparing a catalyst
Assignee: Universal Oil Products Co
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Filing: 1971-12-06
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Granted: 1973-08-07
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Expires: 1991-12-06
Abstract
Abstract A METHOD OF PREPARING A HYDROREFINING CATALYST FOR THE CONVERSION OF C7-INSOLUBLE ASPHALTENES AND SULFUROUS COMPONENTS IN A RESIDUAL OIL. THE CATALYST COMPRISES A REFRACTORY INORGANIC OXIDE CARRIER MATERIAL IMPREGNATED WITH A METAL OR GROUPS VI-B AND VIII. IMPROVED ACTIVITY AND STABILITY RESULTS FROM NOVEL OXIDIZING AND REDUCING PROCEDURES PRIOR TO SULFIDING OF THE CATALYST.
Inventors
- 👤 Hara M O
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:17
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/20; C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |