US3574700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing dinitriles
Assignee: Monsanto Co
•
Filing: 1968-06-12
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Granted: 1971-04-13
•
Expires: 1988-06-12
Abstract
Abstract BORON PHOSPHATE CONTAINING MINOR AMOUNTS OF SULFATEAND/OR SODIUM/CONTAINING SALTS PROVIDES AN IMPROVED DEHYDRATION CATALYST FOR THE SYNTHESIS OF NITRILES FROM CARBOXYLIC COMPOUNDS OR DERIVATIVES THEREOF AND AMMONIA.
Inventors
- 👤 Robert T Somich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:09
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/16; C; C07; C07C; C07C253/00; C07C253/22
Claims Analysis
Total Claims: 0
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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) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |