Patent US3795683A successfully refreshed from Google Patents.
US3795683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2,3,4,5-tetrahydro-1h-3-benzazepines
Assignee: F Hoffmann La Roche AG
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Filing: 1970-08-19
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Granted: 1974-03-05
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Expires: 1990-08-19
Abstract
Abstract A PROCESS FOR THE PREPARATION OF HETEROCYCLIC COMPOUNDS CONTAINING ONE NITROGEN ATOM AND NOVEL 2,3,4,5TETRAHYDRO-1H-3-BENZAZEPINES PREPARED BY THIS PROCESS ARE DISCLOSED. THE RESULTING HETEROCYCLIC COMPOUNDS, INCLUDING THE NOVEL 2,3,4,5-TETRAHYDRO-1H-3-BENZAZEPINE DERIVATIVES, EXHIBIT ANALGESIC, APPETITE SUPPRESSANT, AND ANTI-EDEMA ACTIVITY.
Inventors
- 👤 A Brossi
- 👤 B Pecherer
- 👤 R Sunbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:36
CPC Classifications
C; C07; C07D; C07D223/00; C07D223/14; C07D223/16; C07C; C07C255/00; C07D317/00; C07D317/08; C07D317/44; C07D317/46; C07D317/48; C07D317/50; C07D317/58; C07D317/60; C07D491/00; C07D491/02; C07D491/04; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/55
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |