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US3553218A
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2-oxo-7-phenyl-1,2,3,4,6,7-hexahydro-11bh- benzo(a)quinolizines
Assignee: Merck KGaA
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Filing: 1967-01-06
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Granted: 1971-01-05
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Expires: 1987-01-06
Abstract
Abstract 2-OXO-7-PHENYL-1,2,3,4,6,7 - HEXAHYDRO - 11BH - BENZ/ (A)QUINOLIZINES HAVING AN EFFECT ON THE CENTRAL NERVOUS SYSTEM.
Inventors
- 👤 Richard Unger
- 👤 Helmut Muller-Calgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:54
CPC Classifications
C; C07; C07D; C07D491/00; C07D491/12; C07D491/14; C07D217/00; C07D217/02; C07D217/12; C07D217/14; C07D217/16; C07D455/00; C07D455/03; C07D455/04; C07D455/06
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |