Patent US3743645A successfully refreshed from Google Patents.
US3743645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-substituted-4-phenoxypiperidines
Assignee: AH Robins Co Inc
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Filing: 1970-10-19
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Granted: 1973-07-03
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Expires: 1990-10-19
Abstract
Abstract 1-SUBSTITUTED-4-PHENOXYPIPERIDINES USEFUL AS TRANQUILIZERS ARE DISCLOSED. THE COMPOUNDS ARE PREPARED BY REACTING 4-PHENOXYPIPERIDINE INTERMEDIATES WHICH ARE PREPARED FROM 4-PIPERIDINOL WITH COMPOUNDS CONTAINING ACTIVE HALIDES.
Inventors
- 👤 G Helsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:03
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/56; C07D211/58; C07D211/40; C07D211/44; C07D211/46; C07D211/08; C07D211/18; C07D211/20; C07D211/22; C07D401/00; C07D401/02; C07D401/12
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |