Patent US3859288A successfully refreshed from Google Patents.
US3859288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arylpyrimidines - inhibitors of platelet aggregation and bronchodilators
Assignee: Pfizer Inc
•
Filing: 1971-09-20
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Granted: 1975-01-07
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Expires: 1991-09-20
Abstract
Abstract 4-Amino-6-arylpyrimidines and salts thereof, a class of inhibitors of platelet aggregation and broncho-dilators in mammals, and 4-hydroxy-6-arylpyrimidines as useful intermediates.
Inventors
- 👤 Gerald George Deangelis
- 👤 Hans-Jurgen Ernst Hess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:22
CPC Classifications
C; C07; C07D; C07D495/00; C07D495/02; C07D495/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
8 words
A COMPOUND SELECTED FROM THOSE OF THE FORMULA
Claim 2
Dependent Claim
8 words
A COMPOUND SELECTED FROM THOSE OF THE FORMULA
Claim 3
Dependent Claim
1 words
4-Diethylamino-5-methyl-6-phenylpyrimidine.
Claim 4
Dependent Claim
1 words
4-Diethylamino-5-methyl-6-phenylpyrimidine.
Claim 5
Dependent Claim
1 words
4-Diethylamino-5-ethyl-6-phenylpyrimidine.
Claim 6
Dependent Claim
1 words
4-Diethylamino-5-ethyl-6-phenylpyrimidine.
References Cited (Backward Citations)
US2418548A
Cited
US2735225A
Cited
US1915334A
Cited
US2075359A
Cited
US2425320A
Cited
US2606155A
Cited
US3707560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |