US3769427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pharmaceutical compositions and methods of using same
Assignee: Armour Pharmaceutical Co
•
Filing: 1972-05-25
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Granted: 1973-10-30
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Expires: 1992-05-25
Abstract
Abstract AROMATIC GUANIDINE COMPOUNDS HAVING THE FORMULA: 1-(NH2-C(=NH)-NH-),2-R1,3-R2,4-R3,5-R4-BENZENE WHEREIN: R1 IS HYDROGEN; R2 IS CHLORO, FLUORO OR BROMO; R3 IS HYDROXY, OR ALKYL HAVING ONE TO FOUR CARBON ATOMS; AND R4 IS HYDROGEN, CHLORO, BROMO OR FLUORO AND THEIR SALTS ARE SHOWN TO BE ACTIVE AS VASCONSTRICTOR AGENTS AND CREATED USEFUL PHARMACEUTICAL PREPARTIONS WHEN DEPLOYED WITH A PHARMACEUTICALLY ACCEPTABLE CARRIER FOR ADMINISTRATION TO A HOST, E.G., MAN, REQUIRING VASOCONSTRICTIVE THERAPY.
Inventors
- 👤 J Hughes
- 👤 Huan R Chung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:38
CPC Classifications
C; C07; C07C; C07C279/00; C07C279/18
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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |