US3577466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of allylic ethers
Assignee: Shell USA Inc
•
Filing: 1968-07-30
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Granted: 1971-05-04
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Expires: 1988-07-30
Abstract
Abstract PRODUCTION OF ALLYLIC ETHERS BY REACTING IN HIGH CONVERSION AN ALLYLIC ALCOHOL OF THE FORMULA WHERE R IS HYDROGEN, METHYL OR HYDROXYMETHYL AND R'' IS HYDROGEN OR METHYL, WITH ITSELF OR WITH A NONALLYLIC ALCOHOL IN THE PRESENCE AS CATALYST OF CUPRIC CHLORIDE OR BROMIDE OR ADDITIONALLY IN THE PRESENCE AS CATALYST PROMOTER OF AN ACIDIC MATERIAL OR AN ALLYLIC HALIDE, WHERE THE HALIDE IS CHLORIDE OR BROMIDE. R-CH=CH-CHR''-OH
Inventors
- 👤 Kenzie Nozaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:15
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/14
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) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |