US3478048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2,3;3a,12b - tetrahydro - 8h - dibenzo (3,4;6,7)cyclohept(1,2-d)oxazoles and derivatives
Assignee: F Hoffmann La Roche AG
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Filing: 1966-01-03
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Granted: 1969-11-11
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Expires: 1986-01-03
Abstract
No abstract record available.
Inventors
- 👤 Albrecht Edenhofer
- 👤 Hans Spiegelberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:38
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/52; C07C; C07C243/00; C07C49/00; C07C49/587; C07C49/703; C07C49/747; C07D303/00; C07D303/02; C07D303/12; C07D303/32
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) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |