US4252798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible male contraception
Assignee: Pharmacia and Upjohn Co
•
Filing: 1980-02-14
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Granted: 1981-02-24
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Expires: 2000-02-14
Abstract
Abstract Various steroids which have a high affinity for rat ABP (androgen binding protein) and a low affinity for rat AR (androgen receptor) have been found to be useful as male contraceptives. Upon cessation of administration of the steroids of the present invention the male promptly regains normal fertility.
Inventors
- 👤 Donald J. Tindall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:43
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/56; A61K31/565; A61K31/58
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
41 words
A method of effecting male contraception which comprises oral administration of a contraceptively effective amount of 17β-methoxy-2α-methyl-5α-androstan-3-one to a healthy male mammal post-puberty selected from the group consisting of male dog, tom, bull, stallion, ram, boar, male rat and male mouse.
Claim 2
Independent Claim
41 words
A method of effecting male contraception which comprises oral administration of a contraceptively effective amount of 17β-methoxy-2α-methyl-5α-androstan-3-one to a healthy male mammal post-puberty selected from the group consisting of male dog, tom, bull, stallion, ram, boar, male rat and male mouse.
Claim 3
Dependent Claim
22 words
A method of effecting male contraception according to claim 1 wherein the contraceptively effective amount is about 0.01 to about 15 mg./kg./day.
Claim 4
Dependent Claim
23 words
A method of effecting male contraception according to claim 2 wherein the oral administration is of 1-250 mg., 1 thru 4 times daily.
Claim 5
Dependent Claim
26 words
A method of effecting male contraception according to claim 2 where the healthy male mammal is selected from the group consisting of male dog or tom.
Claim 6
Dependent Claim
18 words
A method of effecting male contraception according to claim 4 where the oral administration utilized is a tablet.
Claim 7
Dependent Claim
18 words
A method of effecting male contraception according to claim 4 where the oral administration utilized is a liquid.
Claim 8
Dependent Claim
18 words
A method of effecting male contraception according to claim 4 where the oral administration utilized is a treat.
Claim 9
Dependent Claim
22 words
A method of effecting male contraception according to claim 2 where the healthy male mammal is a male rat or male mouse.
Claim 10
Dependent Claim
17 words
A method of effecting male contraception according to claim 8 where the oral administration utilized is bait.
Claim 11
Dependent Claim
22 words
A method of effecting male contraception according to claim 2 where the healthy male mammal is a bull, stallion, ram, or boar.
Claim 12
Dependent Claim
20 words
A method of effecting male contraception according to claim 10 where the oral administration is with a dry veterinary premix.
Claim 13
Dependent Claim
19 words
A method of effecting male contraception according to claim 10 where the oral administration is with an animal feed.
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) | 1984-02-24 | 1984-08-25 | 1985-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-24 | 1988-08-25 | 1989-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-24 | 1992-08-25 | 1993-02-24 | $7700.00 | Window Closed / Lapsed |