US3342751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of catalyst preparation
Assignee: Universal Oil Products Co
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Filing: 1964-02-07
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Granted: 1967-09-19
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Expires: 1984-02-07
Abstract
No abstract record available.
Inventors
- 👤 John C Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:42
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/755; C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/38; C01B3/40; B01J37/00; B01J37/02; B01J37/0201; C01B2203/00; C01B2203/10; C01B2203/1041; C01B2203/1047; C01B2203/1052; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A METHOD FOR PREPARING A CATALYST WHICH COMPRISES ACTIVATING A REFRACTORY, PREDOMINANTLY ALUMINA BASE WITH NICKEL AND THEN SUBJECTING THE COMPOSITE TO DRYING AND TO A LOW TEMPERATURE CALCINATION OF LESS THAN 1200*F. AND A SUBSEQUENT HIGH TEMPERATURE REDUCTION IN THE PRESENCE OF HYDROGEN AT ABOVE ABOUT 1200*F.
Claim 2
Independent Claim
48 words
A METHOD FOR PREPARING A CATALYST WHICH COMPRISES ACTIVATING A REFRACTORY, PREDOMINANTLY ALUMINA BASE WITH NICKEL AND THEN SUBJECTING THE COMPOSITE TO DRYING AND TO A LOW TEMPERATURE CALCINATION OF LESS THAN 1200*F. AND A SUBSEQUENT HIGH TEMPERATURE REDUCTION IN THE PRESENCE OF HYDROGEN AT ABOVE ABOUT 1200*F.
References Cited (Backward Citations)
US3129060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |