US3803207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of beta-ethylenic nitriles
Assignee: Societe Nationale des Petroles dAquitaine SA
•
Filing: 1972-03-01
•
Granted: 1974-04-09
•
Expires: 1992-03-01
Abstract
Abstract A PROCESS FOR PREPARING B-ETHYLENIC NITRILES, PARTICULARLY METHACRYLONITRILE, BY OXIDIZING THE CORRESPONDING OLEFINS, IN THE PRESENCE OF AMMONIA AND A CATALYST, THE ACTIVE PART OF WHICH CONTAINS MOLYBDENUM, IRON AND TELLURIUM OXIDES, IN THE PROPORTIONS OF 1 TO 15% MOO3, 25 TO 50% FE2O3, AND 45 TO 70% TEO3, METHACRYLONITRILE IS A VERY USEFUL RAW MATERIAL FOR PRODUCING METHACRYLATE.
Inventors
- 👤 J Tellier
- 👤 J Blanc
- 👤 R Voirin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:45
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/24; C07C253/26; B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/881; B01J27/00; B01J27/02; B01J27/057; B01J27/0576; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1977-04-08 | 1977-10-08 | 1978-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-08 | 1981-10-08 | 1982-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-08 | 1985-10-08 | 1986-04-09 | $7700.00 | Window Closed / Lapsed |