Patent US3749664A successfully refreshed from Google Patents.
US3749664A
Expired / Lapsed
US
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Hydrogenative denitrogenation
Assignee: Union Oil Company of California
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Filing: 1971-04-01
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Granted: 1973-07-31
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Expires: 1991-04-01
Abstract
Abstract HYDROCARBONS CONTAINING ORGANONITROGEN COMPOUNDS ARE DENITROGENATED BY REACTING HYDROGEN WITH THE HYDROCARBON FEED UNDER DENITROGENATION CONDITIONS IN THE PRESENCE OF A CATALYTIC COMBINATION OF AT LEAST ONE MOLYBDENUM COMPOUND AND AT LEAST ONE GROUP VIII METAL OR METAL COMPOUND PREPARED BY IMPREGNATING A FORAMINOUS REFRACTORY OXIDE SUPPORT WITH A HIGHLY STABLE SOLUTION OF THE METAL COMPOUNDS AND AN ACID OF PHOSPHORUS WHEREIN THE IMPREGNATING SOLUTION HAS A P/M0O3 WEIGHT RATIO OF ABOUT 0.1 TO ABOUT 0.25 AND AN INITIAL PH OF ABOUT 1 TO ABOUT 2.
Inventors
- 👤 G Mickelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:12
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/186; B01J27/188; B01J27/19; C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08
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) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |