US3706694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic hydrocracking
Assignee: Union Oil Company of California
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Filing: 1970-03-09
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Granted: 1972-12-19
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Expires: 1990-03-09
Abstract
Abstract A METHOD FOR PREPARING CRYSTALLINE ALUMINOSILICATE ZEOLITE CATALYSTS HAVING A LOW ALKALI METAL CONTENT IN THE ZEOLITE AND CONTAINING (1) A POLYVALENT METAL CATION, PREFERABLY AN IRON GROUP METAL AND (2) A HYDROGENATION COMPONENT, COMPRISES PRE-CALCINING OR PRE-STEAMING THE POLYVALENT METAL CONTAINING ZEOLITE PRIOR TO ADDITION OF THE HYDROGENATION COMPONENT. THE INVENTION ALSO INCLUDES THE SUBSEQUENT INTRODUCTION OF ADDITIONAL STABILIZING ELEMENT FOLLOWING THE PRE-CALCINING OR PRE-STEAMING BUT PRIOR TO ADDITION OF THE HYDROGENATION COMPONENT. THE CATALYSTS FIND PARTICULAR UTILITY IN HYDROCRACKING AND HYDROTREATING PROCESSES.
Inventors
- 👤 Dean Arthur Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:54
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/061; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; B01J20/186; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; C10G49/00; C10G49/02; C10G49/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |