US3746724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-guanidinoalkyl-thiophenes
Assignee: Novartis Corp
•
Filing: 1971-01-26
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Granted: 1973-07-17
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Expires: 1991-01-26
Abstract
Abstract 3-GUANIDINOALKYL-THIOPHENES, E.G. THOSE OF THE FORMULA 2-R1,3-(R4-N(-R5)-C(=N-R6)-N(-R3)-Z-),R2-THIOPHENE R1.2=H, ALKYL OR HALOGEN R3, , 4=H OR ALKYL R5,6=H, ALKYL OR ALKYLENE Z IS A STRAIGHT OR BRANCHED ALKYLENE OF UP TO 4 CARBON ATOMS. AND SALTS THEREOF ARE ANTIHYPERTENSIVES.
Inventors
- 👤 L Werner
- 👤 N Finch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:42
CPC Classifications
C; C07; C07D; C07D333/00; C07D333/02; C07D333/04; C07D333/06; C07D333/14; C07D333/20; C07D333/12; C07D333/22; C07D333/24; C07D333/26; C07D333/28
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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |