US2655518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Estradienes
Assignee: GD Searle LLC
•
Filing: 1952-05-07
•
Granted: 1953-10-13
•
Expires: 1972-05-07
Abstract
No abstract record available.
Inventors
- 👤 Frank B Colton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:58
CPC Classifications
C; C07; C07J; C07J1/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
THE COMPOUNDS OF THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
6 words
THE COMPOUNDS OF THE STRUCTURAL FORMULA
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) | 1956-10-12 | 1957-04-13 | 1957-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-12 | 1961-04-13 | 1961-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-12 | 1965-04-13 | 1965-10-13 | $7700.00 | Window Closed / Lapsed |