US3438981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dibenzooxepine and dibenzothiepine derivatives
Assignee: Roche Diagnostics GmbH
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Filing: 1967-08-17
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Granted: 1969-04-15
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Expires: 1987-08-17
Abstract
No abstract record available.
Inventors
- 👤 Kurt Stach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:41
CPC Classifications
C; C07; C07D; C07D405/00; C07D405/02; C07D405/06; C07D313/00; C07D313/02; C07D313/06; C07D313/10; C07D313/12; C07D337/00; C07D337/02; C07D337/06; C07D337/10; C07D337/12; C07D409/00; C07D409/02; C07D409/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE623259A
Cited
US3193549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |