US3819723A
Expired / Lapsed
US
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Derivatives of dibenzo(a,b)5h-cycloheptene,method of preparation,and application thereof
Assignee: AUGUIL SOC CIV
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Filing: 1972-08-18
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Granted: 1974-06-25
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Expires: 1992-08-18
Abstract
Abstract NEW CHEMICAL COMPOUNDS OF THE FORMULA FORMS PARTS OF A HETEROCYCLE; AND ACID ADDITION SALTS THEREOF. THESE COMPOUNDS ARE ACTIVE ON THE CENTRAL NERVOUS SYSTEM AND ON THE CARDIOVASCULAR SYSTEM. R1-N(-R2)- 5-(R1-N(-R2)-CH2-C=C-CH=)-5H-DIBENZO(A,D)CYCLOHEPTENE WHEREIN R1 AND R2 ARE EACH SELECTED FROM THE GROUP CONSISTING OF ALKYL OR HYDROXYALKYL, OR WHERE
Inventors
- 👤 F Dvolaitzky
- 👤 J Cognacq
- 👤 E Ber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:41
CPC Classifications
C; C07; C07C; C07C13/00; C07C13/28; C07C13/32; C07C13/54; C07C13/547; C07C1/00; C07C1/32; C07C1/325; C07C1/327; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/30; C07C2603/32
Claims Analysis
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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) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |