US3282981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Activated addition of hydrogen cyanide to olefins
Assignee: EIDP Inc
•
Filing: 1963-10-23
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Granted: 1966-11-01
•
Expires: 1983-10-23
Abstract
No abstract record available.
Inventors
- 👤 Davis Darwin Darrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:43
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/08; C07C253/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
IN A PROCESS OF PRODUCING ALIPHATIC NITRILES BY THE ADDITION OF HYDROGEN CYANIDE TO LOWER ALIPHATIC OLEFINS BY CONTACTING A MIXTURE OF HYDROGEN CYANIDE AND A LOWER ALIPHATIC OLEFIN IN CONTACT WITH NICKEL CYANIDE AS A CATALYST AT A TEMPERATURE IN THE RANGE BETWEEN 300* C. AND 400*C., THE IMPROVEMENT WHICH COMPRISES ADDING FROM ABOUT 1 TO ABOUT 33% BY VOLUME OF HYDROGEN TO THE SAID MIXTURE.
Claim 2
Dependent Claim
67 words
IN A PROCESS OF PRODUCING ALIPHATIC NITRILES BY THE ADDITION OF HYDROGEN CYANIDE TO LOWER ALIPHATIC OLEFINS BY CONTACTING A MIXTURE OF HYDROGEN CYANIDE AND A LOWER ALIPHATIC OLEFIN IN CONTACT WITH NICKEL CYANIDE AS A CATALYST AT A TEMPERATURE IN THE RANGE BETWEEN 300* C. AND 400*C., THE IMPROVEMENT WHICH COMPRISES ADDING FROM ABOUT 1 TO ABOUT 33% BY VOLUME OF HYDROGEN TO THE SAID MIXTURE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |