US2526044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of nitriles
Assignee: Armour and Co
•
Filing: 1945-09-10
•
Granted: 1950-10-17
•
Expires: 1965-09-10
Abstract
No abstract record available.
Inventors
- 👤 Anderson W Ralston
- 👤 Turinsky Otto
- 👤 Carl W Christensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:30
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/32; C07C253/34; C07C253/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
IN A PROCESS FOR PREPARING NITRILE, THE STEP OF REACTING A FATTY ACID MATERIAL AND AMMONIA IN THE PRESENCE OF A PHOSPHORUS CATALYST.
Claim 2
Dependent Claim
23 words
IN A PROCESS FOR PREPARING NITRILE, THE STEP OF REACTING A FATTY ACID MATERIAL AND AMMONIA IN THE PRESENCE OF A PHOSPHORUS CATALYST.
References Cited (Backward Citations)
US2023337A
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US2130523A
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US2175092A
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US2162971A
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US2273633A
Cited
US2314894A
Cited
US2388034A
Cited
US2380531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-16 | 1954-04-17 | 1954-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-16 | 1958-04-17 | 1958-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-16 | 1962-04-17 | 1962-10-17 | $7700.00 | Window Closed / Lapsed |