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US2763623A
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Preparation of silica-alumina catalyst of reduced cracking activity
Assignee: Universal Oil Products Co
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Filing: 1951-05-26
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Granted: 1956-09-18
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Expires: 1971-05-26
Abstract
No abstract record available.
Inventors
- 👤 Haensel Vladimir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:21
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; C; C10; C10G; C10G47/00; C10G47/02; C10G47/10; C10G47/12; C10G47/14; B01J21/00; B01J21/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A PROCESS FOR PREPARING A CATALYST COMPRISING HEATING A SYNTHETIC SILICA-ALUMINA CRACKING COMPONENT AT A TEMPERATURE OF FROM ABOUT 900* TO ABOUT 1800* F. IN THE PRESENCE OF STEAM UNTIL THE HYDROCARBON CRACKING ACTIVITY THEREOF IS REDUICED BELOW ABOUT 50% OF THE ORIGINAL ACTIVITY, AND COMPOSITING PLATINUM THEREWITH IN AN AMOUNT OF FROM ABOUT 0.01% TO ABOUT 2.5% BY WEIGHT OF THE CATALYST.
Claim 2
Dependent Claim
63 words
A PROCESS FOR PREPARING A CATALYST COMPRISING HEATING A SYNTHETIC SILICA-ALUMINA CRACKING COMPONENT AT A TEMPERATURE OF FROM ABOUT 900* TO ABOUT 1800* F. IN THE PRESENCE OF STEAM UNTIL THE HYDROCARBON CRACKING ACTIVITY THEREOF IS REDUICED BELOW ABOUT 50% OF THE ORIGINAL ACTIVITY, AND COMPOSITING PLATINUM THEREWITH IN AN AMOUNT OF FROM ABOUT 0.01% TO ABOUT 2.5% BY WEIGHT OF THE 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) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |