Patent US3749794A successfully refreshed from Google Patents.
US3749794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ether compounds as inhalation anesthetics
Assignee: BOC Inc
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Filing: 1971-08-13
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Granted: 1973-07-31
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Expires: 1991-08-13
Abstract
Abstract CYCLIC ETHER COMPOUNDS OF THE FORMULA (-O-CH2-CH2-O-)>C(-CF2-Y)-(CF2)N-X WHEREIN X IS H OR F, Y IS H OR F, AND N IS 0 OR 1, WITH THE PROVISOS THAT WHEN X IS F THEN N IS 1, AND WHEN Y IS F THEN N IS 0 AND X IS H, ARE USEFUL AS SOLVENTS AND DISPERSANTS FOR FLUORINATED MATERIALS. IN ADDITION, THOSE COMPOUNDS WHERIEN WHEN N IS 1 THEN X IS F AND Y IS H, AND WHEN N IS 0 THEN X IS H AND Y IS F-I.E., 2-DIFLUOROMETHYL-2-TRIFLUOROMETHYLDIOXOLANE AND 2-TRIFLUOROMETHYL DIOXOLANE-ARE USEFUL AS INHALATION ANALGESICCS AND ANESTHETICS.
Inventors
- 👤 R Terrell
- 👤 G Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:02
CPC Classifications
C; C07; C07D; C07D317/00; C07D317/08; C07D317/10; C07D317/14; C07D317/16
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) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |