US3458516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
11-(piperazinyl)dibenz(b,f)(1,4)oxazepines and analogous thiazepines
Assignee: Wyeth Holdings LLC
•
Filing: 1968-02-16
•
Granted: 1969-07-29
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Expires: 1988-02-16
Abstract
No abstract record available.
Inventors
- 👤 Charles Frederick Howell
- 👤 Robert Allis Hardy Jr
- 👤 Nicanor Quinones Quinones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:37
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/16; C07D295/20; C07D295/215; C07C; C07C205/00; C07C205/27; C07C205/35; C07C205/36; C07C205/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3038896A
Cited
AT246156B
Cited
US3342807A
Cited
US3306934A
Cited
US3210372A
Cited
US3268557A
Cited
US3274058A
Cited
US3329717A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |