US3681407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-methoxy 8{62 -methylestra 1,3,5(10),9(11)-tetraene-17{62 -carboxylic acid lower alkyl ester and intermediates in the preparation thereof
Assignee: Wyeth Holdings LLC
•
Filing: 1969-06-18
•
Granted: 1972-08-01
•
Expires: 1989-06-18
Abstract
Abstract This invention relates to novel steroid and steroid-like compounds, a method for synthesizing said compounds and to the use thereof as progestational agents in the treatment of laboratory and domestic animals. Certain of said compounds are also useful as estrogenic agents.
Inventors
- 👤 Marinus Los
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:41
CPC Classifications
C; C07; C07J; C07J63/00; C07J63/008
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
11 words
A compound 3-methoxy-8 Beta -methylestra-1,3,5(10),9(11)-tetraene-17 Beta -carboxylic acid, lower alkyl ester.
Claim 2
Dependent Claim
7 words
The compound 3-methoxy-8 Beta -methyl-17 Beta -((methylsulfinyl)acetyl)-estra-1,3,5(10),9(11)-tetraene.
Claim 3
Dependent Claim
8 words
The compound 3-methoxy-8 Beta -methylestra-1,3,5(10),9(11)-tetraene-17 Beta -carboxylic acid.
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |