US4657901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pharmaceutical composition
Assignee: Sheiseido Co Ltd
•
Filing: 1984-09-07
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Granted: 1987-04-14
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Expires: 2004-09-07
Abstract
Abstract The present invention concerns a composition for topical application which is greatly useful for the treatment of acne. The composition contains (1) a compound of the formula: ##STR1## or its ester or ether, (2) keratolytic agent and (3) pharmaceutically acceptable carrier.
Inventors
- 👤 Haruhiko Ueda
- 👤 Hidekazu Toyoda
- 👤 Minoru Fukuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:38
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/56; A61K31/565
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
34 words
A composition for the topical treatment of acne, which comprises (1) an effective amount for treating acne of oxendolone or its ester or ether, (2) a keratolytic agent, and (3) a pharmaceutically acceptable carrier.
Claim 2
Dependent Claim
34 words
A composition for the topical treatment of acne, which comprises (1) an effective amount for treating acne of oxendolone or its ester or ether, (2) a keratolytic agent, and (3) a pharmaceutically acceptable carrier.
Claim 3
Dependent Claim
27 words
The composition according to claim 1, wherein the content of oxendolone is from about 0.001 W/V % to about 2 W/V % relative to the whole composition.
Claim 4
Dependent Claim
12 words
The composition according to claim 1, wherein the keratolytic agent is urea.
Claim 5
Dependent Claim
12 words
The composition according to claim 1, wherein the keratolytic agent is resorcinol.
Claim 6
Dependent Claim
41 words
The composition according to claim 1 wherein the oxendolone is from about 0.001 W/V % to about 2 W/V % relative to the whole composition and the keratolytic agent is present in an amount of 0.001 to about 15 W/V %.
Claim 7
Dependent Claim
33 words
The composition according to claim 1 which contains a gelling agent in an amount of 0.001 to about 20 W/V % and an alcohol in an amount of 5 to 70 W/V %.
Claim 8
Dependent Claim
16 words
The composition according to claim 1, wherein the composition comprises a gelling agent and/or an alcohol.
Claim 9
Dependent Claim
13 words
The composition according to claim 7, wherein the gelling agent is carboxyvinyl polymer.
Claim 10
Dependent Claim
12 words
The composition according to claim 7, wherein the alcohol is ethyl alcohol.
Claim 11
Dependent Claim
12 words
The composition according to claim 7, wherein the alcohol is benzyl alcohol.
Claim 12
Dependent Claim
17 words
The composition according to claim 7, which comprises oxendolone, urea, carboxyvinyl polymer, ethyl alcohol and benzyl alcohol.
Claim 13
Dependent Claim
17 words
The composition according to claim 7, which comprises oxendolone, resorcinol, carboxyvinyl polymer, ethyl alcohol and benzyl alcohol.
Claim 14
Dependent Claim
28 words
The composition according to claim 7, wherein the content of the oxendolone is from about 0.001 W/V % to about 2 W/V % relative to the whole composition.
Claim 15
Dependent Claim
12 words
The composition according to claim 7, wherein the keratolytic agent is urea.
Claim 16
Dependent Claim
12 words
The composition according to claim 7, wherein the heratolytic agent is resorcinol.
Claim 17
Independent Claim
37 words
A method of treatment of acne which comprises administering topically the composition containing (1) an effective amount for treating acne of oxendolone, or its ester or ether, (2) a keratolytic agent, and (3) a pharmaceutically acceptable carrier.
Claim 18
Independent Claim
37 words
A method of treatment of acne which comprises administering topically the composition containing (1) an effective amount for treating acne of oxendolone, or its ester or ether, (2) a keratolytic agent, and (3) a pharmaceutically acceptable carrier.
Claim 19
Dependent Claim
46 words
A method according to claim 16 wherein the oxendolone is present in an amount of from about 0.001 W/V % to about 2 W/V % relative to the whole composition and the keratolytic agent is present in an amount of 0.001 to about 15 W/V %.
Claim 20
Dependent Claim
33 words
A method according to claim 17 which contains a gelling agent in an amount of 0.001 to about 20 W/V % and an alcohol in an amount of 5 to 70 W/V %.
References Cited (Backward Citations)
US3856829A
Cited
US4514385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-13 | 1990-10-13 | 1991-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-13 | 1994-10-13 | 1995-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-13 | 1998-10-13 | 1999-04-14 | $7700.00 | Window Closed / Lapsed |