US4364940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions for treating acne
Assignee: USV Pharmaceutical Corp
•
Filing: 1981-02-23
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Granted: 1982-12-21
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Expires: 2001-02-23
Abstract
Abstract A composition for the treatment of acne in the form of a solution, lotion or cream containing from about 1 to 10% by weight of a compound of the formula <IMAGE> wherein R is an alkyl having up to 6 carbon atoms or aryl having up to 10 carbon atoms and R1 and R2 are independently hydrogen, lower alkyl having up to 6 carbon atoms, phenyl, phenyl-lower alkyl, lower alkylphenyl, halogen, halophenyl, trifluoromethyl, trifluoromethylphenyl, lower alkoxy, methylenedioxy, and lower alkoxyphenyl.
Inventors
- 👤 Edward S. Neiss
- 👤 Bernard Loev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:50
CPC Classifications
A; A61; A61Q; A61Q19/00; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/38; A61P; A61P17/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
31 words
A composition for the topical treatment of acne in the form of a lotion or cream containing from about 1 to 10% by weight of a compound of the formula ##STR3##
Claim 2
Dependent Claim
31 words
A composition for the topical treatment of acne in the form of a lotion or cream containing from about 1 to 10% by weight of a compound of the formula ##STR3##
Claim 3
Dependent Claim
25 words
A process for treating acne which comprises applying to the acne-affected area of the skin an effective amount of a composition according to claim 1.
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) | 1985-12-20 | 1986-06-21 | 1986-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-20 | 1990-06-21 | 1990-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-20 | 1994-06-21 | 1994-12-21 | $7700.00 | Window Closed / Lapsed |