US2905676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
17-alkyl-17-hydroxy-5(10)-estren-3-one
Assignee: GD Searle LLC
•
Filing: 1956-08-16
•
Granted: 1959-09-22
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Expires: 1976-08-16
Abstract
No abstract record available.
Inventors
- 👤 Frank B Colton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:13
CPC Classifications
C; C07; C07J; C07J1/00; C07J75/00
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) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |