US3069469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenation of aromatic nitriles
Assignee: California Research LLC
•
Filing: 1958-06-11
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Granted: 1962-12-18
•
Expires: 1978-06-11
Abstract
No abstract record available.
Inventors
- 👤 John B Wilkes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:35
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/44; C07C209/48; B; B01; B01J; B01J23/00; B01J23/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A PROCESS FOR REDUCING A MONONUCLEAR AROMATIC NITRILE TO AN AMINE, WHEREIN SAID AROMATIC NITRILE HAS AT LEAST ONE CYANO GROUP DIRECTLY ATTACHED TO THE AROMATIC NUCLEUS IN OTHER THAN ORTHO RELATIONSHIP TO OTHER CYANO GROUPS SO ATTACHED AND IS OTHERWISE UNSUBSTITUTED, WHICH COMPRISES REACTING SAID NITRILE WITH HYDROGEN AND AMMONIA AT A TEMPERATURE OF FROM ABOUT 100* TO 400*F. UNDER SUPERATMOSPHERIC PRESSURE IN THE PRESENCE OF A COBALT-NICKEL METAL CATALYST, WHEREIN THE WEIGHT RATIO OF NICKEL TO COBALT OF SAID CATALYST LIES IN THE RANGE FROM ABOUT 1:9 TO 15:1.
Claim 2
Dependent Claim
91 words
A PROCESS FOR REDUCING A MONONUCLEAR AROMATIC NITRILE TO AN AMINE, WHEREIN SAID AROMATIC NITRILE HAS AT LEAST ONE CYANO GROUP DIRECTLY ATTACHED TO THE AROMATIC NUCLEUS IN OTHER THAN ORTHO RELATIONSHIP TO OTHER CYANO GROUPS SO ATTACHED AND IS OTHERWISE UNSUBSTITUTED, WHICH COMPRISES REACTING SAID NITRILE WITH HYDROGEN AND AMMONIA AT A TEMPERATURE OF FROM ABOUT 100* TO 400*F. UNDER SUPERATMOSPHERIC PRESSURE IN THE PRESENCE OF A COBALT-NICKEL METAL CATALYST, WHEREIN THE WEIGHT RATIO OF NICKEL TO COBALT OF SAID CATALYST LIES IN THE RANGE FROM ABOUT 1:9 TO 15:1.
References Cited (Backward Citations)
GB356731A
Cited
US2166971A
Cited
US2160578A
Cited
US2449036A
Cited
US2773902A
Cited
US2844631A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |