US2911374A
Expired / Lapsed
US
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Preparation of desulfurization catalysts
Assignee: Wyeth Holdings LLC
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Filing: 1957-06-06
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Granted: 1959-11-03
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Expires: 1977-06-06
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Malley
- 👤 John D Pennell
- 👤 Harvey D Schindler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:03
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/882
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A PROCESS FOR THE PREPARATION OF A COLBALT AND MOLYBDENUM ACTIVATED ALUMINA BASE DESULFURIZATION CATALYST WHICH COMPRISES MIXING TOGETHER (A) A MIXTURE OF 80-86 PARTS BY WEIGHT OF ALUMINA HYDRATE FILTER CAKE AND 9-25%, EXPRESSED AS MOO3 BASED ON THE TOTAL SOLIDS OF THIS MIXTURE, OF A WATER-SOLUBLE MOLYDBENUM COMPOUND CAPABLE OF BEING CONVERTED TO ITS OXIDE, SPRAY DRIED TO A VOLATILE CONTENT OF FROM 20-37%; AND (B) A MIXTURE OF 14-20 PARTS OF ALUMINA HYDRATE FILTER CAKE AND 7-30% EXPRESSED AS COO BASED ON THE TOTAL SOLIDS OF THIS MIXTURE OF A WATER-SOLUBLE COBALT SALT CAPABLE OF BEING CONVERTED TO ITS OXIDE, THERBY PRODUCING A CATAYLST
Claim 2
Dependent Claim
107 words
A PROCESS FOR THE PREPARATION OF A COLBALT AND MOLYBDENUM ACTIVATED ALUMINA BASE DESULFURIZATION CATALYST WHICH COMPRISES MIXING TOGETHER (A) A MIXTURE OF 80-86 PARTS BY WEIGHT OF ALUMINA HYDRATE FILTER CAKE AND 9-25%, EXPRESSED AS MOO3 BASED ON THE TOTAL SOLIDS OF THIS MIXTURE, OF A WATER-SOLUBLE MOLYDBENUM COMPOUND CAPABLE OF BEING CONVERTED TO ITS OXIDE, SPRAY DRIED TO A VOLATILE CONTENT OF FROM 20-37%; AND (B) A MIXTURE OF 14-20 PARTS OF ALUMINA HYDRATE FILTER CAKE AND 7-30% EXPRESSED AS COO BASED ON THE TOTAL SOLIDS OF THIS MIXTURE OF A WATER-SOLUBLE COBALT SALT CAPABLE OF BEING CONVERTED TO ITS OXIDE, THERBY PRODUCING A CATAYLST
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |