US2742491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of beta-aminopropionitrile
Assignee: Merck and Co Inc
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Filing: 1953-02-10
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Granted: 1956-04-17
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Expires: 1973-02-10
Abstract
No abstract record available.
Inventors
- 👤 Weijlard John
- 👤 Jr Alan P Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:29
CPC Classifications
C; C07; C07C; C07C255/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
THE PROCESS OF PRODUCING B-AMINOPROPIONITRILE WHICH COMPRISES REACTING ACRYLONITRILE WITH ANHYDROUS AMMONIA IN THE PRESENCE OF A TERTIARY LOWER ALIPHATIC ALCOHOL.
Claim 2
Dependent Claim
21 words
THE PROCESS OF PRODUCING B-AMINOPROPIONITRILE WHICH COMPRISES REACTING ACRYLONITRILE WITH ANHYDROUS AMMONIA IN THE PRESENCE OF A TERTIARY LOWER ALIPHATIC ALCOHOL.
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) | 1959-04-17 | 1959-10-17 | 1960-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-17 | 1963-10-17 | 1964-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-17 | 1967-10-17 | 1968-04-17 | $7700.00 | Window Closed / Lapsed |