Patent US3637704A successfully refreshed from Google Patents.
US3637704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1gamma-(p-fluorobenzoyl)propyl-4-phenylalkyl piperazine
Assignee: Sumitomo Pharma Co Ltd
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Filing: 1968-04-23
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Granted: 1972-01-25
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Expires: 1988-04-23
Abstract
Abstract NOVEL 1-AROYLPROPYL-4-ARALKYL PIPERAZINES AND PHARMACEUTICALLY ACCEPTABLE NON-TOXIC SALTS THEROF WHICH ARE USEFUL AS THE PSYCHOTROPIC AGENTS, AND TO COMPOSITIONS FOR PSYCHOTROPIC AGENTS WHICH COMPRISE AS AN ACTIVE COMPONENT A 1-AROYLPROPYL-4-ARALKYL PIPERAZINE OR A PHARMACEUTICALLY ACCEPTABLE NON-TOXIC SALT THEREOF.
Inventors
- 👤 Susumu Umemoto
- 👤 Yasutaka Nagai
- 👤 Keiji Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:36
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/10; C07D295/104
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) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |