US3491103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Certain 4h-benzo(4,5)cyclohepta-(1,2-b) thiophenes
Assignee: Sandoz AG
•
Filing: 1967-06-15
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Granted: 1970-01-20
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Expires: 1987-06-15
Abstract
No abstract record available.
Inventors
- 👤 Ernst Jucker
- 👤 Anton Ebnother
- 👤 Jean-Michel Bastian
- 👤 Erwin Rissi
- 👤 Andre Stoll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:58
CPC Classifications
C; C07; C07D; C07D409/00; C07D409/02; C07D409/04; C07D333/00; C07D333/50; C07D333/78; C07D333/80; C08; C08F; C08F2/00; C08F2/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |