US3609196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ether compounds
Assignee: Airco Inc
•
Filing: 1970-03-02
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Granted: 1971-09-28
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Expires: 1990-03-02
Abstract
Abstract The present invention relates to the novel compounds 1,1,2,2tetrafluoroethyl trichloromethyl ether (CHF2CF2OCCI3); 1,1,2,2tetrafluoroethyl dichloromethyl ether (CHF2CF2OCHC12); and 1,1,2,2-tetrafluoroethyl fluorochloromethyl ether (CHF2CF2OCHFCI). The compounds are prepared through selective stepwise chlorination and fluorination of 1,1,2,2tetrafluoroethyl methyl ether. The compounds are useful as anesthetics and as solvents and dispersants of fluorinated materials.
Inventors
- 👤 Ross C Terrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:13
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/04; C07C43/12; C07C43/123
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
US2803666A
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Cited
US3104202A
Cited
US3216897A
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US3362180A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |