US3445519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing 5-(3-methylamino-propyl - or - propylidene)-5h - dibenzo cycloheptenes or 10,11-dihydro compounds
Assignee: Merck and Co Inc
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Filing: 1967-11-14
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Granted: 1969-05-20
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Expires: 1987-11-14
Abstract
No abstract record available.
Inventors
- 👤 Janos Kollonitsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:31
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/68; C07C319/00; C07C319/14; C07C319/02; C07C319/20; C07C323/00; C07C323/10; C07C323/11; C07C323/12; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3264342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |