US3786054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-methyl-n-methylmorphinans
Assignee: Astellas Pharma Inc
•
Filing: 1971-06-08
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Granted: 1974-01-15
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Expires: 1991-06-08
Abstract
Abstract A NOVEL MORPHINAN DERIVATIVE REPRESENTED BY THE GENERAL FORMULA 5-(CH3-),11-R-1,2,3,4,4A,10-HEXAHYDRO-9H-10,4A- IMINOETHANOPHENANTHRENE WHEREIN R REPRESENTS AN ALIPHATIC HYDROCARBON RESIDUAL GROUP HAVING 1-5 CARBON ATOMS AND AN ACID-ADDITION SALT THEREOF. THESE COMPOUNDS HAVE AN EXCELLENT ANTITUSSIVE ACTIVITY.
Inventors
- 👤 H Iwamoto
- 👤 H Ida
- 👤 N Inukai
- 👤 N Nagano
- 👤 M Murakami
- 👤 S Kawahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:17
CPC Classifications
C; C07; C07D; C07D217/00; C07D217/02; C07D217/12; C07D217/18; C07D217/22; C07D217/24; C07D221/00; C07D221/02; C07D221/22; C07D221/28
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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |