US3823152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-substituted-2-piperidinethiones and homologues thereof
Assignee: Astellas Pharma Inc
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Filing: 1971-07-29
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Granted: 1974-07-09
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Expires: 1991-07-29
Abstract
Abstract THIS INVENTION RELATES TO COMPOUNDS OF THE FORMULA: HN<(-(CH2)N-C(-R2")(-R3")-CS-) THESE COMPOUNDS INHIBIT GASTRIC SECRETION AND ARE USEFUL IN TREATMENT FOR A DIGESTIVE ULCER. -H, -CH3, PHENYL, PHENYL-CH2- AND R3" IS SELECTED FROM THE GROUP CONSISTING OF 2-PYRIDYL, PHENYL, 4-(H3C-)-PYRIDYL, -CH2-(2-PYRIDYL), WHEREIN N IS 3 OR 4, R2" IS SELECTED FROM THE GROUP CONSISTING OF
Inventors
- 👤 Y Nakai
- 👤 T Watanabe
- 👤 A Morimoto
- 👤 H Takasugi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:32
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/68; C07D211/72; C07D235/00; C07D235/02; C07D235/04; C07D235/06; C07D235/16
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |