Patent US3798225A successfully refreshed from Google Patents.
US3798225A
Expired / Lapsed
US
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3(2h)-isoquinolones
Assignee: Mead Johnson and Co LLC
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Filing: 1971-09-27
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Granted: 1974-03-19
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Expires: 1991-09-27
Abstract
Abstract NEW 2-SUBSTITUTED-3(2H)-ISOQUINOLONES AND 2-SUBSTITUTED-3-ALKOXYISOQUINOLINES ARE DISCLOSED. THEY ARE ORALLY ACTIVE HYPOTENSIVES AND PERIPHERAL VASODILATORS WITH AN EXTENDED DURATION OF ACTION; REPRESENTATIVE EMBODIMENTS OF THIS INVENTION ARE 6,7-DIMETHOXY-2-METHYL-1: VERATRYL-3(2H)-ISOQUINOLONE HYDROCHLORIDE, 2-ALLYL-6,7DIMETHOXY-1-VERATRYL-3(2H)ISOQUINOLONE HYDROCHLORIDE, 2- CYCLOPROPYL- 6,7-DIMETHOXY -1-VERTRYL3(2H)-ISOQUINILONE HYDROCHLORIDE, 2-AMINO-6,7-DIMETHOXY-1-VERTRYL-3(2H)-ISOQUINOLONE HYDROCHLORIDE, AND 3-ETHOXY-6,7-DIMETHOXY-1-VERTRYLISOQUINOLINE.
Inventors
- 👤 W Kreighbaum
- 👤 W Comer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:06
CPC Classifications
C; C07; C07D; C07D217/00; C07D217/12; C07D217/18; C07D217/20; C07D217/22; C07D217/24; C07D311/00; C07D311/02; C07D311/76
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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |