US2897161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing cobalt-molyb-denum-alumina catalyst
Assignee: Sinclair Refining Co
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Filing: 1957-04-16
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Granted: 1959-07-28
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Expires: 1977-04-16
Abstract
No abstract record available.
Inventors
- 👤 Erickson Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:32
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/882; B01J21/00; B01J21/02; B01J21/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
IN A METHOD OF INCREASING THE CRUSHING STRENGTH OF CALCINED EXTRIDED CATALYST CONSISTING ESSENTIALLY OF A MAJOR PORTION OF AN ACTIVATED ALUMINA AND MINOR BUT EFFECTIVE PORTIONS OF COBALT AND MOLYBDENUM, THE STEPS WHICH COMPRISE SOAKING SAID CALCINED CATALYST WITH WATER IN THE LIQUID PHASE FOR A TIME SUFFICIENT OT PROVIDE CATALYST PARTICLES OF INCREASED STRENGTH UPON RECALCINATION AND CALCINING THE THUS TREATED CATALYST.
Claim 2
Dependent Claim
64 words
IN A METHOD OF INCREASING THE CRUSHING STRENGTH OF CALCINED EXTRIDED CATALYST CONSISTING ESSENTIALLY OF A MAJOR PORTION OF AN ACTIVATED ALUMINA AND MINOR BUT EFFECTIVE PORTIONS OF COBALT AND MOLYBDENUM, THE STEPS WHICH COMPRISE SOAKING SAID CALCINED CATALYST WITH WATER IN THE LIQUID PHASE FOR A TIME SUFFICIENT OT PROVIDE CATALYST PARTICLES OF INCREASED STRENGTH UPON RECALCINATION AND CALCINING THE THUS TREATED CATALYST.
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) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |