US3808231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-(2-hydroxy-3-(2-alkynylamino)propoxy)indoles
Assignee: Sandoz AG
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Filing: 1972-01-04
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Granted: 1974-04-30
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Expires: 1992-01-04
Abstract
Abstract THIS INVENTION CONCERNS NEW HETEROCYCLIC COMPOUNDS OF THE FORMULA: 2- OR 3-R3,4-(CH*C-C(-R1)(-R2)-NH-CH2-CH(-OH)-CH2-O-)- INDOLE WHEREIN R1, R2 AND R3 ARE THE SAME OR DIFFERENT AND ARE EACH HYDROGEN OR METHYL, WHICH EXHIBIT PHARMACOLOGICAL PROPERTIES, AND ARE USEFUL AS ADRENERGIC B-RECEPTOR BLOCKING AGENTS AND ANTIARRHYTHMIC AGENTS.
Inventors
- 👤 F Seemann
- 👤 F Troxler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:44
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/04; C07D209/08
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) | 1977-04-29 | 1977-10-29 | 1978-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-29 | 1981-10-29 | 1982-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-29 | 1985-10-29 | 1986-04-30 | $7700.00 | Window Closed / Lapsed |