Patent US2715137A successfully refreshed from Google Patents.
US2715137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of nitriles
Assignee: EIDP Inc
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Filing: 1952-11-19
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Granted: 1955-08-09
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Expires: 1972-11-19
Abstract
No abstract record available.
Inventors
- 👤 Harry B Copelin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:08
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A PROCESS FOR THE PRODUCTION OF A NITRILE WHICH COMPRISES REACTING A NITRILE FORMING METAL CYANIDE WITH AN ALIPHATIC ORGANIC COMPOUND CONTAINING AT LEAST ONE HALOGEN ATOM OF ATOMIC WEIGHT NOT LESS THAN 35, AND HAVING NOT MORE THAN TWO OF SAID HALOGEN ATOMS ON A SINGLE CARBON ATOM, AT LEAST ONE OF SAID HALOGEN ATOMS BEING LINKED TO A NON-TERTIARY CARBON ATOM, IN A LIQUID REACTION MIXTURE INITIALLY CONTAINING NOT LESS THAN ABOUT 40% BY WEIGHT OF AT LEAST ONE AMIDE SELECTED FROM THE GROUP CONSISTING OF THE N-DIALKYL AMIDES OF FORMIC, ACETIC AND PROPIONIC ACIDS WHICH CONTAIN NOT MORE THAN TWO CARBON ATOMS IN EACH N-ALKYL RADICAL.
Claim 2
Dependent Claim
109 words
A PROCESS FOR THE PRODUCTION OF A NITRILE WHICH COMPRISES REACTING A NITRILE FORMING METAL CYANIDE WITH AN ALIPHATIC ORGANIC COMPOUND CONTAINING AT LEAST ONE HALOGEN ATOM OF ATOMIC WEIGHT NOT LESS THAN 35, AND HAVING NOT MORE THAN TWO OF SAID HALOGEN ATOMS ON A SINGLE CARBON ATOM, AT LEAST ONE OF SAID HALOGEN ATOMS BEING LINKED TO A NON-TERTIARY CARBON ATOM, IN A LIQUID REACTION MIXTURE INITIALLY CONTAINING NOT LESS THAN ABOUT 40% BY WEIGHT OF AT LEAST ONE AMIDE SELECTED FROM THE GROUP CONSISTING OF THE N-DIALKYL AMIDES OF FORMIC, ACETIC AND PROPIONIC ACIDS WHICH CONTAIN NOT MORE THAN TWO CARBON ATOMS IN EACH N-ALKYL RADICAL.
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) | 1958-08-08 | 1959-02-07 | 1959-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-08 | 1963-02-07 | 1963-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-08 | 1967-02-07 | 1967-08-09 | $7700.00 | Window Closed / Lapsed |