US3686093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocracking arrangement
Assignee: Individual
•
Filing: 1971-02-25
•
Granted: 1972-08-22
•
Expires: 1991-02-25
Abstract
Abstract THE INVENTION RELATES TO A HYDROCRACKING ARRANGMENT. CRUDE OR RESIDUA FEEDBSTOCK IS IN A FIRST STAGE TREATED TO HYDROGENATE ITS NON-HYDROCARBON CONTENT USING A FLUIDISED CATALYST DESCENDING IN A MULTI-BED REACTOR IN COUNTERCURRENT TO FEED AND HYDROGEN. THE EFFLUENT FROMTHE FIRST REACTOR PASSES TO DISCARD HYDROCRACKER ALSO WITH DESCENDING FLUIDISED CATALYST AND ASCENDING FEED AND HYDROGEN, THE CATALYST BEING REGENERATED LOW ACTIVITY CATALYST FROM THE SUBSEQUENT MAIN HYDROCRACKING ZONE.
Inventors
- 👤 Robert Leard Irvine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:39
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G45/14; C10G45/16; C10G2300/00; C10G2300/10; C10G2300/107
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) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |