US2524831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of nitriles
Assignee: Armour and Co
•
Filing: 1945-10-17
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Granted: 1950-10-10
•
Expires: 1965-10-17
Abstract
No abstract record available.
Inventors
- 👤 Ralph H Potts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:12
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN A PROCESS FOR MAKING HIGH MOLECULAR WEIGHT FATTY ACID NITRILES, THE STEPS OF CONTINUOUSLY PASSING FATTY ACID HAVING AT LEAST 8 CARBON ATOMS SUCCESSIVELY THROUGH A SERIES OF POOLS OF LIQUID CONTAINING FATTY ACID AND NITRILES, CONTINUOUSLY PASSING GASEOUS AMMONIA THROUGH SAID SERIES OF POOLS AND INTO CONTACT WITH ACID IN EACH OF THE POOLS OF SAID SERIES, SAID AMMONIA BEING IN EXCESS OF THE AMOUNT STOICHIOMETRICALLY REQUIRED FOR REACTION WITH SAID ACID, AND MAINTAINING SAID POOLS AT A TEMPERATURE SUFFICIENT FOR LIQUID PHASE REACTION OF THE ACID AND AMMONIA TO PRODUCE NITRILES.
Claim 2
Dependent Claim
94 words
IN A PROCESS FOR MAKING HIGH MOLECULAR WEIGHT FATTY ACID NITRILES, THE STEPS OF CONTINUOUSLY PASSING FATTY ACID HAVING AT LEAST 8 CARBON ATOMS SUCCESSIVELY THROUGH A SERIES OF POOLS OF LIQUID CONTAINING FATTY ACID AND NITRILES, CONTINUOUSLY PASSING GASEOUS AMMONIA THROUGH SAID SERIES OF POOLS AND INTO CONTACT WITH ACID IN EACH OF THE POOLS OF SAID SERIES, SAID AMMONIA BEING IN EXCESS OF THE AMOUNT STOICHIOMETRICALLY REQUIRED FOR REACTION WITH SAID ACID, AND MAINTAINING SAID POOLS AT A TEMPERATURE SUFFICIENT FOR LIQUID PHASE REACTION OF THE ACID AND AMMONIA TO PRODUCE NITRILES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |