US2816907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1, 4a-dimethyl-6-hydroxy-7-isopropyl-1, 2, 3, 4, 4a, 9, 10, 10a-octahydrophenanthrene -1-carbonitrile and derivatives thereof
Assignee: GD Searle LLC
•
Filing: 1956-04-09
•
Granted: 1957-12-17
•
Expires: 1976-04-09
Abstract
No abstract record available.
Inventors
- 👤 Willard M Hoehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:46
CPC Classifications
C; C07; C07C; C07C255/00; C07C255/49; C07C255/53; A; A61; A61K; A61K31/00; A61K31/275; A61K31/277; C07C255/57; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A COMPOUND OF THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
6 words
A COMPOUND OF THE STRUCTURAL FORMULA
References Cited (Backward Citations)
US2750402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |