Patent US2950289A successfully refreshed from Google Patents.
US2950289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
9alpha-halo-a-norprogesterones
Assignee: Olin Corp
•
Filing: 1959-07-28
•
Granted: 1960-08-23
•
Expires: 1979-07-28
Abstract
No abstract record available.
Inventors
- 👤 Frank L Weisenborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:45
CPC Classifications
C; C07; C07J; C07J61/00; C07J5/00; C07J75/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/913
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A COMPOUND OF THE GENERAL FORMULA
Claim 2
Dependent Claim
6 words
A COMPOUND OF THE GENERAL FORMULA
References Cited (Backward Citations)
US2786837A
Cited
US2760980A
Cited
US2822380A
Cited
US2822381A
Cited
US2835698A
Cited
US2902495A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |