Patent US2854474A successfully refreshed from Google Patents.
US2854474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1,12-dimethyl-6-hydroxy-7-acyl-9-oxo-1,2,3,4,9,10,11,12-cotahydrophenan-threne-1-carboxylic acids and derivatives thereof
Assignee: GD Searle LLC
•
Filing: 1956-07-19
•
Granted: 1958-09-30
•
Expires: 1976-07-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Roy H Bible
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:14
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/74; C07C69/757; A; A61; A61K; A61K31/00; A61K31/21; A61K31/215; A61K31/216; 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)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |