US3562279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted 7,8-dihydro - 6 - methoxy-6,14-endo(etheno or ethano)morphide - 7-ketones and n-cycloalkylmethyl - 7,8-dihydro - 6 - methoxy-6,14-endo(etheno or ethano) norcodide-7-ketones
Assignee: Wyeth Holdings LLC
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Filing: 1969-05-15
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Granted: 1971-02-09
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Expires: 1989-05-15
Abstract
Abstract THIS DISCLOSURE DESCRIBES COMPOUNDS OF THE CLASS OF SUBSITUTED 7,8-DIHYDRO-6-METHOXY-6,14-ENDO7ETHENO OR ETHANO)MORPHIDE-7-KETONES AND 7-CYCLOALKYLMETHYL-7,8DIAHYDRO-6-METHOXY-6,14-ENDO(ETHENO OR ETHANO) NORCODIDE-7-KETONES WHICH POSSESS ANALGESIC ACTIVITY.
Inventors
- 👤 John Johnston Brown
- 👤 Robert Allis Hardy Jr
- 👤 Carol Nora Roth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:11
CPC Classifications
C; C07; C07D; C07D489/00; C07D489/09; C07D489/10; C07D489/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |