Patent US3823148A successfully refreshed from Google Patents.
US3823148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-biphenylyl isoquinoline derivatives
Assignee: Individual
•
Filing: 1972-05-25
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Granted: 1974-07-09
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Expires: 1992-05-25
Abstract
Abstract IT HAS BEEN FOUND THAT NEW ISOQUINOLINES OF THE FORMULA 1-Z,6-X,7-Y-ISOQUINOLINE WHERE X AND Y ARE FREE OR ETHERIFIED HYDROXY GROUPS AND Z IS ONE OF CERTAIN SELECTED SUBSTITUENTS AND THEIR DI- AND TETRA-HYDROGENATED DERIVATIVES, AND THE ACID ADDITION SALTS THEREOF ARE PHARMACO''OGICALLY ACTIVE, FOR INSTANCE, ON THE CARDIOVASCULAR SYSTEM AS HYPOTENSIVES AND ON THE CENTRAL NERVOUS SYSTEM AS DEPRESSANTS AND ANTICONVULSANTS.
Inventors
- 👤 A Jansen
- 👤 J Hollowood
- 👤 A Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:16
CPC Classifications
C; C07; C07D; C07D217/00; C07D217/12; C07D217/14; C07D217/16; C07D217/02; C07D217/18; C07D217/20
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) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |