US3822266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
(3-(1-piperazinyl)-2-hydroxy-propoxy)acetanilides
Assignee: F Hoffmann La Roche AG
•
Filing: 1972-07-07
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Granted: 1974-07-02
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Expires: 1992-07-07
Abstract
Abstract SUBSTITUTED (3-(4-PHENYL-1-PIPERAZINYL)-PROPOXY OR PROPYLTHIO)ANILINES PREPARED, INTER ALIA, BY THE REACTION OF THE CORRESPONDINGLY SUBSTITUTED PROPOXY OR PROPYL-THIO ANILINES AND N-PHENYL-PIPERAZINES, ARE DESCRIBED. THE END PRODUCTS, I.E., THE SUBSTITUTED (3,(4-PHENYL-1-PIPERAZINYL)PROPOXY OR PROPYL-THIO) ANILINES ARE USEFUL AS HYPOTENSIVE AGENTS. THE (3-(1-PIPERAZINYL)-2-HYDROXY-PROPOXY)ACETANILIDES ARE SPECIALLY CLAIMED.
Inventors
- 👤 A Edenhofer
- 👤 H Spiegelberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:52
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088; C07D295/10; C07D295/12
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) | 1977-07-01 | 1977-12-31 | 1978-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-01 | 1981-12-31 | 1982-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-01 | 1985-12-31 | 1986-07-02 | $7700.00 | Window Closed / Lapsed |