Patent US3293298A successfully refreshed from Google Patents.
US3293298A
Expired / Lapsed
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Hydrogenation process for the preparation of primary amines
Assignee: Emery Oleochemicals LLC
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Filing: 1963-07-17
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Granted: 1966-12-20
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Expires: 1983-07-17
Abstract
No abstract record available.
Inventors
- 👤 Szabo Dennis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:28
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/44; C07C209/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A PROCESS FOR PREPARING PRIMARY FATTY AMINES CONTAINING FROM 8 TO 22 CARBON ATOMS, WHICH COMPRISES HYDROGENATING THE CORRESPONDING NITRILE IN THE PRESENCE OF A NICKEL HYDROGENATION CATALYST AND 1-10% BY WEIGHT OF THE NITRILE OF AN ALUMINA-CONTAINING POLAR ADSORBENT, THE REACTION BEING CONDUCTED AT A TEMPERATURE NOT SUBSTANTIALLY IN EXCESS OF 150* C.
Claim 2
Dependent Claim
54 words
A PROCESS FOR PREPARING PRIMARY FATTY AMINES CONTAINING FROM 8 TO 22 CARBON ATOMS, WHICH COMPRISES HYDROGENATING THE CORRESPONDING NITRILE IN THE PRESENCE OF A NICKEL HYDROGENATION CATALYST AND 1-10% BY WEIGHT OF THE NITRILE OF AN ALUMINA-CONTAINING POLAR ADSORBENT, THE REACTION BEING CONDUCTED AT A TEMPERATURE NOT SUBSTANTIALLY IN EXCESS OF 150* C.
References Cited (Backward Citations)
GB421718A
Cited
US2166152A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |