US4053489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oestratriene diethers
Assignee: Individual
•
Filing: 1976-02-11
•
Granted: 1977-10-11
•
Expires: 1996-02-11
Abstract
Abstract 3,17-Estratriene diethers, useful as anti-seborrheic and gynecological agents, is described.
Inventors
- 👤 Pierre Charles Wirth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:03
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/63; A61Q; A61Q19/00; A61Q5/00; A61Q5/008; A61Q19/08; A61Q7/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
28 words
A compound of the formula ##STR3## wherein R 1 is a methyl or ethyl group and R 2 is an alkyl group having 3 to 5 carbon atoms.
Claim 2
Dependent Claim
28 words
A compound of the formula ##STR3## wherein R 1 is a methyl or ethyl group and R 2 is an alkyl group having 3 to 5 carbon atoms.
Claim 3
Dependent Claim
10 words
A compound as claimed in claim 1 which is 3-propoxy-17-beta-methoxy-oestra-1,3,5(10)-triene.
Claim 4
Dependent Claim
10 words
A compound as claimed in claim 1 which is 3-propoxy-17-beta-ethoxy-oestra-1,3,5(10)-triene.
Claim 5
Dependent Claim
10 words
A compound as claimed in claim 1 which is 3-butoxy-17-beta-methoxy-oestra-1,3,5(10)-triene.
Claim 6
Dependent Claim
11 words
A compound as claimed in claim 1 which is 3-butoxy-17-beta-ethoxy-oestra-1,3,5(10 )-triene.
Claim 7
Dependent Claim
10 words
A compound as claimed in claim 1 which is 3-pentoxy-17-beta-methoxy-oestra-1,3,5(10)-triene.
Claim 8
Dependent Claim
10 words
A compound as claimed in claim 1 which is 3-pentoxy-17-beta-ethoxy-oestra-1,3,5(10)-triene.
References Cited (Backward Citations)
DE1117572B
Cited
US3272849A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |