US3769433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inhalant anesthetic compositions and method
Assignee: BOC Inc
•
Filing: 1971-07-02
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Granted: 1973-10-30
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Expires: 1991-07-02
Abstract
Abstract THE NOVEL COMPOUNDS 2,2-DIFLUOROETHYL DIFLUOROMETHYL ETHER AND ITS 1-CHLORO DERIVATIVE HAVING THE FORMULA CHF2CHCI-O-CHF2 ARE DISCLOSED. THE LATTER COMPOUND CAN BE PREPARED THROUGH CHLORINATION OF 2,2-DIFLUOROETHYL DIFLUOROMETHYL ETHER WHICH IN TURN CAN BE MADE BY REACTION OF 2,2-DIFLUOROETHANOL AND DIFLUOROCHLOROMETHANE IN THE PRESENCE OF AQUEOUS SODIUM HYDROXIDE. THE NOVEL COMPOUNDS ARE USEFUL AS INHALATION ANESTHETICS AND AS SOLVENTS AND DISPERSANTS FOR FLORINATED MATERIALS.
Inventors
- 👤 R Terrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:46
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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |