US2770640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyanoethylation of ketones
Assignee: Monsanto Chemicals Ltd
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Filing: 1954-09-23
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Granted: 1956-11-13
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Expires: 1974-09-23
Abstract
No abstract record available.
Inventors
- 👤 Glen E Journeay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:49
CPC Classifications
C; C07; C07C; C07C255/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A PROCESS FOR THE CYANOETHYLATION OF KETONES WHICH COMPRISES REACTING B,B''-OXYDIPROPIONITRILE WITH A KETONE HAVING AT LEAST ONE ACTIVE HYDROGEN ATOM ATTACHED TO A CARBON ATOM ADJACENT TO THE KETONE CARBONYL GROUP IN THE PRESENCE OF A STRONGLY ALKALINE CATALYST.
Claim 2
Dependent Claim
40 words
A PROCESS FOR THE CYANOETHYLATION OF KETONES WHICH COMPRISES REACTING B,B''-OXYDIPROPIONITRILE WITH A KETONE HAVING AT LEAST ONE ACTIVE HYDROGEN ATOM ATTACHED TO A CARBON ATOM ADJACENT TO THE KETONE CARBONYL GROUP IN THE PRESENCE OF A STRONGLY ALKALINE CATALYST.
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) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |