US3655728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-(2 - dialkylaminoalkylene)-esters of fluoroalkoxy-substituted aryl carboxylic acid and salts thereof
Assignee: Riker Laboratories Inc
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Filing: 1970-07-22
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Granted: 1972-04-11
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Expires: 1990-07-22
Abstract
Abstract N- (2 - DIALKYLAMINOALKYLENE) CARBOXYLIC ESTERS OF POLYFLUORALKOXY-SUBSTITUTED AROMATIC ACIDS. ALSO INCLUDED ARE PHARMACEUTICALLY ACCEPTABLE SALTS OF THESE COMPOUNDS. THESE COMPOUNDS HAVE VALUABLE LOCAL ANESTHETIC ACTIVITY.
Inventors
- 👤 Arthur Mendel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:28
CPC Classifications
C; C07; C07C; C07C65/00; C07C65/21; C07C69/00; C07C69/76; C07C69/84; C07C69/92
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) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |