Patent US3278575A successfully refreshed from Google Patents.
US3278575A
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Method for the manufacture of aliphatic nitriles
Assignee: EIDP Inc
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Filing: 1963-10-23
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Granted: 1966-10-11
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Expires: 1983-10-23
Abstract
No abstract record available.
Inventors
- 👤 Davis Darwin Darrell
- 👤 Scott Leon Singrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:56
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/08; C07C253/10; B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/755; B01J23/90; B01J23/94; B01J37/00; B01J37/02; B01J37/03; B01J37/031; B01J37/035; B01J38/00; B01J38/04; B01J38/10; B01J38/12; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A PROCESS FOR THE MANUFACTURE OF ALIPHATIC NITRILES WHICH COMPRISES PASSING A MIXTURE OF A LOWER ALIPHATIC OLEFIN AND HYDROGEN CYANIDE OVER A CATALYST CONSISTING ESSENTIALLY OF FINELY DIVIDED METALLIC NICKEL AT A TEMPERATURE IN THE RANGE BETWEEN 300*C. AND 400*C. AND THEREAFTER RECOVERING AN ALIPHATIC NITRILE WHICH IS THE ADDUCT OF HYDROGEN CYANIDE AND THE SAID OLEFIN FROM THE REACTION PRODUCT.
Claim 2
Dependent Claim
62 words
A PROCESS FOR THE MANUFACTURE OF ALIPHATIC NITRILES WHICH COMPRISES PASSING A MIXTURE OF A LOWER ALIPHATIC OLEFIN AND HYDROGEN CYANIDE OVER A CATALYST CONSISTING ESSENTIALLY OF FINELY DIVIDED METALLIC NICKEL AT A TEMPERATURE IN THE RANGE BETWEEN 300*C. AND 400*C. AND THEREAFTER RECOVERING AN ALIPHATIC NITRILE WHICH IS THE ADDUCT OF HYDROGEN CYANIDE AND THE SAID OLEFIN FROM THE REACTION PRODUCT.
References Cited (Backward Citations)
US2571099A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |