Patent US2783264A successfully refreshed from Google Patents.
US2783264A
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Preparation of nitriles from amides
Assignee: Wyeth Holdings LLC
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Filing: 1955-03-21
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Granted: 1957-02-26
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Expires: 1975-03-21
Abstract
No abstract record available.
Inventors
- 👤 Jr William J Klapproth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:21
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A METHOD OF PRODUCING NITRILES FROM AMIDES WHICH COMPRISES HEATING AN AMIDE SELECTED FROM THE GROUP CONSISTING OF ALKANOIC, ALKENOIC AND AROMATIC CARBOXYLIC ACID AMIDES WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF DIAMMONIUM IMIDODISULFONATE AND TRIAMMONIUM NITRILOTRISULFONATE TO ABOVE 150* C. TO FORM THE CORRESPONDING NITRILE, AND RECOVERING SAID NITRILE.
Claim 2
Independent Claim
52 words
A METHOD OF PRODUCING NITRILES FROM AMIDES WHICH COMPRISES HEATING AN AMIDE SELECTED FROM THE GROUP CONSISTING OF ALKANOIC, ALKENOIC AND AROMATIC CARBOXYLIC ACID AMIDES WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF DIAMMONIUM IMIDODISULFONATE AND TRIAMMONIUM NITRILOTRISULFONATE TO ABOVE 150* C. TO FORM THE CORRESPONDING NITRILE, AND RECOVERING SAID NITRILE.
References Cited (Backward Citations)
US2567676A
Cited
US2567677A
Cited
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 |