US3810893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amino pyrimidines
Assignee: Individual
•
Filing: 1971-07-13
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Granted: 1974-05-14
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Expires: 1991-07-13
Abstract
Abstract A PHARMACUETICAL FORMULATION OF A COMPOUND OF FORMULA II'' 2-NH2,6-Y,7,7-DI(CH3-)-3,4,7,8-TETRAHYDROPTERIDIN-4-ONE WHEREIN Y IS A LOWER ALKYL GROUP, IN ASSOCIATION WITH A PHARMACEUTICALLY ACCEPTABLE CARRIER, AS AN ANTIBACTERIAL PRODUCT, AND METHODS INVOLVING THE PREPARATION AND REDUCTIVE CYCLIZATION OF A COMPOUND OF FORMULA IV 2-NH2,5-NO2,6-(HO-N=C(-Z)-C(-CH3)2-NH-)PYRIMIDIN-4(3H)-ONE WHEREIN Z IS A LOWER ALYL GROUP OR A HYDROXYMETHYL GROUP.
Inventors
- 👤 A Stuart
- 👤 A Curran
- 👤 H Wood
- 👤 Hassan S Al
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:28
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/46; C07D239/47; C07C; C07C201/00; C07C201/06; C07C201/12; C07C29/00; C07C29/132; C07C29/136; C07C29/147; C07C67/00; C07C67/08; C07D239/48; C07D475/00; C07D475/02; C07D475/04
Claims Analysis
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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) | 1977-05-13 | 1977-11-12 | 1978-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-13 | 1981-11-12 | 1982-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-13 | 1985-11-12 | 1986-05-14 | $7700.00 | Window Closed / Lapsed |