US2547686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of succinonitrile
Assignee: Goodrich Corp
•
Filing: 1949-12-02
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Granted: 1951-04-03
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Expires: 1969-12-02
Abstract
No abstract record available.
Inventors
- 👤 Charles E Brockway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:57
CPC Classifications
C; C07; C07C; C07C255/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
THE METHOD OF PREPARING SUCCINONITRILE WHICH COMPRISES REACTING ACRYLONITRILE WITH A KETONE CYANOHYDRIN SELECTED FROM THE CLASS CONSISTING OF ALIPHATIC AND ALICYCLIC KETONE CYANOHYDRINS IN THE PRESENCE OF A BASIC CATALYST AT A TEMPERATURE FROM 50* C. TO 150* C. AND RECOVERING THE SUCCINONITRILE THUS FORMED.
Claim 2
Independent Claim
46 words
THE METHOD OF PREPARING SUCCINONITRILE WHICH COMPRISES REACTING ACRYLONITRILE WITH A KETONE CYANOHYDRIN SELECTED FROM THE CLASS CONSISTING OF ALIPHATIC AND ALICYCLIC KETONE CYANOHYDRINS IN THE PRESENCE OF A BASIC CATALYST AT A TEMPERATURE FROM 50* C. TO 150* C. AND RECOVERING THE SUCCINONITRILE THUS FORMED.
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) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |