US3745162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1,2,3,4-tetrahydroisoquinoline-2-(thio)-carboxamides
Assignee: AH Robins Co Inc
•
Filing: 1970-08-31
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Granted: 1973-07-10
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Expires: 1990-08-31
Abstract
Abstract 4-ARYL(-4-HYDROXY) - 1,2,3,4 - TETRAHYDROISOQUINOLINE2(-2-THIO)-CARBOXAMIDES PREPARED BY REACTING 4-ARYL(-4HYDROXY) - 1,2,3,4 - TETRAHYDROISOQUINOLINES WITH NITROUREA, ALKYL ISOCYANATES, ALKYL ISOTHIOCYANATES, ARYL ISOCYANATES, ARYL ISOTHIOCYANATES AND N,N - DISUBSTITUTED CARBAMOYL HALIDES ARE DESCRIBED. THE COMPOUNDS ARE USEFUL AS ANTICONVULSANTS.
Inventors
- 👤 G Helsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:07
CPC Classifications
C; C07; C07D; C07D217/00; C07D217/12; C07D217/14; C07D217/02; C07D217/06; C07D217/16; C07D217/22; C07D217/24
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) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |