Patent US3663425A successfully refreshed from Google Patents.
US3663425A
Expired / Lapsed
US
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Gasoline producing process comprising hydrocracking and reforming
Assignee: Universal Oil Products Co
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Filing: 1969-09-16
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Granted: 1972-05-16
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Expires: 1989-09-16
Abstract
Abstract A COMBINATION PROCESS INVOLVING HYDROCRACKING AND DEHYDROGENATION. HYDROCRACKING OF A HEAVIER-THAN-GASOLINE CHARGE STOCK IS EFFECTED AT CONDITION CONDUCTIVE TO AROMATIC SATURATION AND EXTENDED CATALYST STABILITY. DE HYDROGENATION OF AT LEAST A PORTION OF THE HYDROCRACKED PRODUCT EFFLUENT IS EFFECTED AT CONDITIONS WHICH ARE CONDUCTIVE TO THE CONVERSION OF NAPTHTHENES TO AROMATICS. THE HYDROCRACKING REACTION IS EFFECTED AT HIGH PRESSURES AND HIGH SPACE VELOCITIES, WHILE THE DEHYDROGENATION REACTION IS EFFECTED AT LOWER PRESSURES AND LOWER SPACE VELOCITIES.
Inventors
- 👤 Ernest L Pollitzer
- 👤 Lee Hilfman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:40
CPC Classifications
C; C10; C10G; C10G69/00; C10G69/02; C10G69/08; C10G69/10
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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |