Patent US2813837A successfully refreshed from Google Patents.
US2813837A
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Manufacture of purification catalysts
Assignee: Universal Oil Products Co
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Filing: 1954-06-16
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Granted: 1957-11-19
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Expires: 1974-06-16
Abstract
No abstract record available.
Inventors
- 👤 Donald L Holden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:08
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08; B; B01; B01J; B01J21/00; B01J21/16; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/882
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A METHOD OF PREPARING A CATALYST COMPRISING ALUMINA, A MOLYBDENUM COMPOUND AND A COBALT COMPOUND, WHICH COMPRISES FORMING PARTICLES OF SAID ALUMINA CALCINING SAID PARTICLES AT A TEMPERATURE OF FROM ABOUT 600* TO ABOUT 1600*F., HYDRATING THE CALCINED PARTICLES TO A MOISTURE CONTENT OF FROM ABOUT 1% TO ABOUT 10% BY WEIGHT, AND THEREAFTER IMPREGNATING THE SAME WITH AN ACIDIC SOLUTION OF A MOLYBDENUM COMPOUND AND A COBALT COMPOUND.
Claim 2
Independent Claim
69 words
A METHOD OF PREPARING A CATALYST COMPRISING ALUMINA, A MOLYBDENUM COMPOUND AND A COBALT COMPOUND, WHICH COMPRISES FORMING PARTICLES OF SAID ALUMINA CALCINING SAID PARTICLES AT A TEMPERATURE OF FROM ABOUT 600* TO ABOUT 1600*F., HYDRATING THE CALCINED PARTICLES TO A MOISTURE CONTENT OF FROM ABOUT 1% TO ABOUT 10% BY WEIGHT, AND THEREAFTER IMPREGNATING THE SAME WITH AN ACIDIC SOLUTION OF A MOLYBDENUM COMPOUND AND A COBALT COMPOUND.
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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) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |