Patent US3686265A successfully refreshed from Google Patents.
US3686265A
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US
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Ammonoxidation of olefins
Assignee: PETROLES D AQUITAINE TOUR SOC
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Filing: 1969-01-21
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Granted: 1972-08-22
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Expires: 1989-01-21
Abstract
Abstract A NEW AND IMPROVED PROCEDURE IS PROVIDED FOR PRODUCING UNSATURATED NITRILES AND PARTICULARLY, ACRYLONITRILE, BY A PROCESS INVOLVING CONTACTING, AT A TEMPERATURE BETWEEN 300* AND 600*C., FOR A PERIOD OF TIME OF 0.15 TO 15 SECONDS, A MIXTURE OF AMMONIA, OXYGEN AND AN OLEFIN SUCH AS A LOWE ALKENE AND PARTICULARLY, PROPYLENE, WITH A CATALYST CONTAINING AS THE ACTIVE MATERIAL, SILICOMOLYBDIC ACID AND RECOVERING THE DESIRED NITRILE PRODUCT THUS FORMED.
Inventors
- 👤 Philippe Reulet
- 👤 Alain Pfister
- 👤 Jacques Tellier
- 👤 Jean Blanc
- 👤 Kirsten Borre Jorgensen
- 👤 Hans Bohlbro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:42
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/24; C07C253/26; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
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) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |