US3157660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of alpha, beta-unsaturated nitriles
Assignee: BASF SE
•
Filing: 1960-03-02
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Granted: 1964-11-17
•
Expires: 1980-03-02
Abstract
No abstract record available.
Inventors
- 👤 Stilz Walter
- 👤 Pommer Horst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:29
CPC Classifications
C; C07; C07C; C07C403/00; C07C403/20; C07C255/00; C07D; C07D307/00; C07D307/02; C07D307/04; C07D307/18; C07D307/20; C07C2601/00; C07C2601/12; C07C2601/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A PROCESS FOR THE PRODUCTION OF ALPHA,BETA-UNSATURATED NITRILES WHICH COMPRISE REACTING A CARBONYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALDEHYDES AND KETONES AT A TEMPERATURE BETWEEN ABOUT -20*C. AND +100*C. IN THE PRESENCE OF A PROTON ACCEPTOR WITH A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
44 words
A PROCESS FOR THE PRODUCTION OF ALPHA,BETA-UNSATURATED NITRILES WHICH COMPRISE REACTING A CARBONYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALDEHYDES AND KETONES AT A TEMPERATURE BETWEEN ABOUT -20*C. AND +100*C. IN THE PRESENCE OF A PROTON ACCEPTOR WITH A COMPOUND OF THE FORMULA
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) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |