US3686173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted thiazolo(3,2-a)pyrimides
Assignee: Individual
•
Filing: 1969-12-29
•
Granted: 1972-08-22
•
Expires: 1989-12-29
Abstract
Abstract SUBSTITUTED 3-ARYL-2-ALKYL THIAZOLO PYRIMIDES E.G., 3-(4''-CHLOROPHENYL) - 2 -ETHYL - 3 - HYDROXY-2,3,6,7-TETRAHYDRO-5H-THIAZOLO(3,2-A)PYRIMIDINE, ARE PREPARED FROM 2-HALOALKYLPHENONES AND 3,4,5,6-TETRAHYDRO-2-PYRIMIDINETHIOL AND ARE USEFUL AS ANTI-DEPRESSANTS.
Inventors
- 👤 William J Houlihan
- 👤 Robert E Manning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:52
CPC Classifications
C; C07; C07D; C07D513/00; C07D513/02; C07D513/04
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) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |