Patent US2910502A successfully refreshed from Google Patents.
US2910502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of aliphatic nitriles
Assignee: Union Carbide Corp
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Filing: 1957-03-01
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Granted: 1959-10-27
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Expires: 1977-03-01
Abstract
No abstract record available.
Inventors
- 👤 Raymond I Hoaglin
- 👤 Henry C Schultze
- 👤 Charles E Hodges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:33
CPC Classifications
C; C07; C07C; C07C255/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A PROCESS FOR THE PRODUCTION OF AN ALIPHATIC MONONITRILE WHICH COMPRISES HEATING AT A TEMPERATURED OF FROM ABOUT 400* TO ABOUT 1000* C. AND ALIPHATIC AMIDE HAVING THE FORMULA R-CONH2, WHEREIN R IS AN ALKYL RADICAL CONTAINING FROM 1 TO 18 CARBON ATOMS, IN THE PRESENCE OF FROM 0.005 TO 5.0 PERCENT B ATOMS, IN THE PRESENCE AMIDE, OF A HOMOGENEOUS CATALYST HAVING THE FORMULA (R''O)3PO, WHEREIN R'' IS AN ALKYL GROUP CONTAINING FROM 2 TO 10 CARBON ATOMS, INCLUSIVE, SAID PROCESS BEING CONDUCTED IN THE VAPOR PHASE WITH A CONTACT TIME OF FROM ABOUT 0.1 TO 30 SECONDS.
Claim 2
Dependent Claim
99 words
A PROCESS FOR THE PRODUCTION OF AN ALIPHATIC MONONITRILE WHICH COMPRISES HEATING AT A TEMPERATURED OF FROM ABOUT 400* TO ABOUT 1000* C. AND ALIPHATIC AMIDE HAVING THE FORMULA R-CONH2, WHEREIN R IS AN ALKYL RADICAL CONTAINING FROM 1 TO 18 CARBON ATOMS, IN THE PRESENCE OF FROM 0.005 TO 5.0 PERCENT B ATOMS, IN THE PRESENCE AMIDE, OF A HOMOGENEOUS CATALYST HAVING THE FORMULA (R''O)3PO, WHEREIN R'' IS AN ALKYL GROUP CONTAINING FROM 2 TO 10 CARBON ATOMS, INCLUSIVE, SAID PROCESS BEING CONDUCTED IN THE VAPOR PHASE WITH A CONTACT TIME OF FROM ABOUT 0.1 TO 30 SECONDS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |