US3706658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocracking of nitrogen containing feedstocks
Assignee: Union Oil Company of California
•
Filing: 1970-08-21
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Granted: 1972-12-19
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Expires: 1990-08-21
Abstract
Abstract HYDROCARBONS CONTAINING SUBSTANTIAL AMOUNTS OF ORGANONITROGEN COMPOUNDS ARE SUBJECTED TO HYDROCRACKING, HYDROFINING, HYDROGENATION AND THE LIKE IN THE PRESENCE OF HYDROGEN OVER A CATALYST COMPRISING ALUMINA AND COMBINATIONS THEREOF WITH SILICA, ZIRCONIA, MAGNESIA AND THE LIKE, SUCH AS ALUMINOSILICATES, WITH OR WITHOUT ACTIVE METAL COMPONENTS, IN THE PRESENCE OF CONTROLLED MINOR AMOUNTS OF WATER FOLLOWED BY THE DISCONTINUANCE OF WATER ADDITION. FURTHER ADVANTAGE IS REALIZED BY CYCLING WATER ADDITION AND DELETION TO PROMOTE EVEN HIGHER AVERAGE SYSTEM ACTIVITIES.
Inventors
- 👤 Robert H Hass
- 👤 Cloyd P Reeg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:04
CPC Classifications
C; C10; C10G; C10G47/00
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 |