US2644842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic hydrogenation of nitriles
Assignee: EIDP Inc
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Filing: 1950-06-14
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Granted: 1953-07-07
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Expires: 1970-06-14
Abstract
No abstract record available.
Inventors
- 👤 Glenn F Hager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:03
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/44; C07C209/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A PROCESS FOR THE PREPARATION OF ALIPHATIC AMINES WHICH COMPRISES HEATING A MIXTURE OF A MONOMERIC ALIPHATIC NITRILE CONTAINING ONLY CARBON, HYDROGEN, AND NITRILE NITROGEN, WITH A MIXTURE OF CARBON MONOXIDE AND HYDROGEN IN MOLE RATIO FROM 1:10 TO 3:1, AT 100-275* C. AND A PRESSURE OF AT LEAST 200 ATMOSPHERES, IN CONTACT WITH A CATALYST ESSENTIALLY COMPRISING A CARBONYL OF AN EIGHTH GROUP ELEMENT AT ATOMIC NUMBER 27 TO 44.
Claim 2
Dependent Claim
71 words
A PROCESS FOR THE PREPARATION OF ALIPHATIC AMINES WHICH COMPRISES HEATING A MIXTURE OF A MONOMERIC ALIPHATIC NITRILE CONTAINING ONLY CARBON, HYDROGEN, AND NITRILE NITROGEN, WITH A MIXTURE OF CARBON MONOXIDE AND HYDROGEN IN MOLE RATIO FROM 1:10 TO 3:1, AT 100-275* C. AND A PRESSURE OF AT LEAST 200 ATMOSPHERES, IN CONTACT WITH A CATALYST ESSENTIALLY COMPRISING A CARBONYL OF AN EIGHTH GROUP ELEMENT AT ATOMIC NUMBER 27 TO 44.
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) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |