Patent US2772270A successfully refreshed from Google Patents.
US2772270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
14-hydroxymorphinone and 8, 14-dihydroxydihydromorphinone
Assignee: M J LEWENSTEIN
•
Filing: 1954-10-21
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Granted: 1956-11-27
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Expires: 1974-10-21
Abstract
No abstract record available.
Inventors
- 👤 Weiss Ulrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:25
CPC Classifications
C; C07; C07D; C07D489/00; C07D489/06; C07D489/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
AS A NEW COMPOUND, 14-HYDROXYMORPHINONE.
Claim 2
Dependent Claim
5 words
AS A NEW COMPOUND, 14-HYDROXYMORPHINONE.
Claim 3
Dependent Claim
5 words
AS A NEW COMPOUND, 8,14-DIHYDROXY-DIHYDROMORPHINONE.
Claim 4
Dependent Claim
5 words
AS A NEW COMPOUND, 8,14-DIHYDROXY-DIHYDROMORPHINONE.
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) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |