US3579510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-(hydroxy-phenyl) substituted amidines and derivatives thereof as anthelmintic agents
Assignee: Pfizer Inc
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Filing: 1967-08-30
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Granted: 1971-05-18
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Expires: 1987-08-30
Abstract
Abstract THE PREPARATION AND ANTHELMINTIC PROPERTIES OF CERTAIN W-(3-R-O-PHENYL) SUBSTITUTED CYCLIC AND ACYCLIC AMIDINES; NAMELY, 1,4,5,6-TETRAHYDRO-2-(2-(3-R-O-PHENYL)ETHYL)PYRIMIDINES, 1,4,5,6 - TETRAHYDRO-2-(2-(O-R-O-PHENYL)VINYL) PYRIMIDINES AND THE CORRESPONDING 2-IMIDAZOLINES; AND N-METHYL - N - SUBSTITUTED 3-(3-R-O-PHENYL)PROPIONAMIDINES AND THE CORRESPONDING ACRYLAMIDINES WHEREIN R-O, IS HYDROXY OR A GROUP CONVERTIBLE TO HYDROXY, IS DESCRIBED.
Inventors
- 👤 James W Mcfarland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:44
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/06; A; A61; A61P; A61P33/00; A61P33/10; C07C; C07C243/00; C07C243/24; C07C243/26; C07C243/34; C07C255/00; C07C259/00; C07C259/12; C07C259/14; C07C45/00; C07C45/61; C07C45/67; C07C45/673; C07C59/00; C07C59/40; C07C59/42; C07C59/52; C07C65/00; C07C65/01; C07C65/03; C07D233/00; C07D233/04; C07D233/20; C07D233/22; C07D233/24
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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |