US3706747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Benzothieno(3,2-d)- and benzofuro(3,2-d)pyrimidines
Assignee: Pfizer Inc
•
Filing: 1970-06-05
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Granted: 1972-12-19
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Expires: 1990-06-05
Abstract
Abstract 4-AMINOBENZOTHIENO(3,2-D)- AND 4-AMINOBENZOFURO(3, 2-D)PYRIMIDINES AND SALTS THEREOF, NOVEL CLASSES OF HETEROCYCLIC COMPOUNDS USEFUL AS INHIBITORS OF PLATELET AGGREGATION.
Inventors
- 👤 Gerald George De Angelis
- 👤 Hans-Jurgen Ernst Hess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:04
CPC Classifications
C; C07; C07D; C07D491/00; C07D491/02; C07D491/04; C07D307/00; C07D307/77; C07D307/78; C07D307/82; C07D307/84; C07D307/85; C07D333/00; C07D333/50; C07D333/52; C07D333/62; C07D333/68; C07D333/70; C07D495/00; C07D495/02; C07D495/04
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) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |