US2783265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of phenylacetonitriles
Assignee: Monsanto Chemicals Ltd
•
Filing: 1954-12-20
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Granted: 1957-02-26
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Expires: 1974-12-20
Abstract
No abstract record available.
Inventors
- 👤 Marrine A Terpstra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:16
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
IN THE PROCESS FOR PREPARING A PHENYLACETONITRILE BY THE REACTION OF A BENZYL HALIDE WIT HAN ALKALI METAL CYAMIDE, THE STEPS COMPRISING ADDING A SOLUTION OF A BENZYL HALIDE DISSOLVED IN A WATER IMMISCIBLE SOLVENT TO AN AQUEOUS SOLUTION CONTAINING ALKALI METAL CYANIDE AND A N,N-DIALKYL CYCLOHEXYLAMINE HEATED TO ITS REFLUX TEMPERATURE AND MAINTAINING THE RESULTING MIXTURE AT ITS REFLUX TEMPERATURE.
Claim 2
Dependent Claim
61 words
IN THE PROCESS FOR PREPARING A PHENYLACETONITRILE BY THE REACTION OF A BENZYL HALIDE WIT HAN ALKALI METAL CYAMIDE, THE STEPS COMPRISING ADDING A SOLUTION OF A BENZYL HALIDE DISSOLVED IN A WATER IMMISCIBLE SOLVENT TO AN AQUEOUS SOLUTION CONTAINING ALKALI METAL CYANIDE AND A N,N-DIALKYL CYCLOHEXYLAMINE HEATED TO ITS REFLUX TEMPERATURE AND MAINTAINING THE RESULTING MIXTURE AT ITS REFLUX TEMPERATURE.
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) | 1960-02-26 | 1960-08-27 | 1961-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-26 | 1964-08-27 | 1965-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-26 | 1968-08-27 | 1969-02-26 | $7700.00 | Window Closed / Lapsed |