US3778451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of propylene oxide
Assignee: Naphtachimie SA
•
Filing: 1970-12-07
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Granted: 1973-12-11
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Expires: 1990-12-07
Abstract
Abstract A PROCESS FOR THE MANUFACTURE OF ORGANIC EPOXIDES BY THE REACTION OF HYDROGEN PEROXIDE IN AN ORGANIC SOLVENT MEDIUM WITH AN ORGANIC COMPOUND HAVING AT LEAST ONE ETHYLENIC DOUBLE BOND, IN THE PRESENCE OF A TRANSITION COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM, TUNGSTEN, VANADIUM, NIOBIUM, TANTALUM, URANIUM AND RHENIUM, SAID COMOUND BEING SOLUBLE IN THE REACTION MEDIUM, AND IN THE PRESENCE OF A NITROGENOUS ORGANIC COMPOUND WHICH IS SOLUBLE IN THE REACTIO MEDIUM AND IN WHICH THE AMOUNT OF WATER PRESENT IN THE REACTION MEDIUM AT THE END OF THE REACTION IS LESS THAN 20% BY WEIGHT.
Inventors
- 👤 Michel Poite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:56
CPC Classifications
C; C07; C07D; C07D301/00; C07D301/32; C07D301/02; C07D301/03; C07D301/12
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) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |