Patent US2847478A successfully refreshed from Google Patents.
US2847478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Allyl transetherification
Assignee: Rohm and Haas Co
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Filing: 1956-08-13
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Granted: 1958-08-12
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Expires: 1976-08-13
Abstract
No abstract record available.
Inventors
- 👤 Jesse C H Hwa
- 👤 Warren H Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:55
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
69 words
A PROCESS FOR PREPARING ALLYL ETHERS WHICH COMPRISES REACTING DIALLYL ETHER WITH A NON-TERTIARY ALCOHOL AT THE REFLUX TEMPERATURE WITH SEPARATION OF WATER FORMED FROM THE CLASS CONSISTING OF SULFURIC ACID, HYDROFLUORIC ACID, BORON TRIFLUORIDE, AND BORON TRIFLUORIDE COORDINATED COMPLEXES, SAID NON-TERTIARY ALCOHOL BEING SELECTED FROM THE GROUP CONSISTING OF ALKANOLS, ALKENOLS HAVING AT LEAST FOUR CARBON ATOMS, CYCLOALKANOLS, ALKYLCYCLOALKANOLS, DICYCLOALKANOLS, TERPENOLS, ARYLALKANOLS, ALKYLARYLALKANOLS, ALKOXYALKANOLS, ARYLOXYALKANOLS, ALKYLARYLOXYALKANOLS, AND ALKYLARYLPOLYETHOXYALKANOLS.
References Cited (Backward Citations)
US2579412A
Cited
US2760990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |