US2616838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distillation of nitriles
Assignee: MW Kellogg Co
•
Filing: 1948-08-27
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Granted: 1952-11-04
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Expires: 1968-08-27
Abstract
No abstract record available.
Inventors
- 👤 Williams George Brymer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:24
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
IN THE PROCESS OF MANUFACTURING NITRILES BY THE REACTION OF FATTY ACIDS WITH AMMONIA, IN WHICH THE REACTION PRODUCTS ARE FRACTIONATED, IN A VERTICALLY EXTENDED FRACTIONATION ZONE TO CONDENSE IN THE BOTTOM OF SAID ZONE A HEAVY FRACTION CONTAINING SUBSTANTIALLY ALL OF THE HEAVY NITRILES AND TO RECOVER A VAPOR FRACTION CONTAINING LIGHT NITRILES AND AMMONIA, THE IMPROVEMENT WHICH CONSISTS IN INTRODUCING GASEOS AMMONIA UPWARDLY THROUGH SAID HEAVY NITRILE FRACTION TO STRIP THEREFROM LIGHT NITRILES AND OTHER LOWBOILING IMPURITIES.
Claim 2
Dependent Claim
79 words
IN THE PROCESS OF MANUFACTURING NITRILES BY THE REACTION OF FATTY ACIDS WITH AMMONIA, IN WHICH THE REACTION PRODUCTS ARE FRACTIONATED, IN A VERTICALLY EXTENDED FRACTIONATION ZONE TO CONDENSE IN THE BOTTOM OF SAID ZONE A HEAVY FRACTION CONTAINING SUBSTANTIALLY ALL OF THE HEAVY NITRILES AND TO RECOVER A VAPOR FRACTION CONTAINING LIGHT NITRILES AND AMMONIA, THE IMPROVEMENT WHICH CONSISTS IN INTRODUCING GASEOS AMMONIA UPWARDLY THROUGH SAID HEAVY NITRILE FRACTION TO STRIP THEREFROM LIGHT NITRILES AND OTHER LOWBOILING IMPURITIES.
References Cited (Backward Citations)
US2314894A
Cited
US2448275A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |