US3663715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ether compounds as anesthetics
Assignee: BOC Inc
•
Filing: 1969-11-03
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Granted: 1972-05-16
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Expires: 1989-11-03
Abstract
Abstract THE PRESENT INVENTION RELATES TO THE NOVEL COMPOUNDS 1,1,2,2-TETRAFLUOROETHYL TRICHLOROMETHYL ETHER (CHF2CF2OCC13) 1,1,2,2-TETRAFLUOROETHYL DICHLOROMETHYL ETHER (CHF2CF2OCHC12) AND 1,1,2,2-TETRAFLUOROETHYL FLUOROCHLOROMETHYL ETHER (CHF2CH2OCHFC1). THE COMPOUNDS ARE PREPARED THROUGH SELECTIVE STEPWISE CHLORINATION AND FLUORINATION OF 1,1,2,2-TETRAFLUOROETHYL 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
2026-11-04 18:34
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)
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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |