Anhydrous composition, stable to oxidation, based on anthralin or one of its derivatives, in a carrier consisting of a fatty acid alkyl ester and a thickener, and its use in the treatment of skin diseases
Patent 4495203 Issued on January 22, 1985. Estimated Expiration Date: 
October 22, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 22, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesDithranol compositions for topical applications Dithranol compositions stabilized with alpha hydroxyacids Anti-acne composition Therapeutic compositions and vehicles for topical pharmaceuticals Stable dithranol compositions in anhydrous vehicles Patent #: 4367224 InventorsApplicationNo. 06/435983 filed on 10/22/1982US Classes:514/732, Polycyclo ring system (e.g., naphthols, etc.)514/863PsoriasisExaminersPrimary: Schenkman, LeonardAttorney, Agent or FirmInternational ClassesA61K 47/20 (20060101)A61K 47/14 (20060101) Foreign Application Priority Data1981-10-23 FRAbstractAnhydrous composition, stable to oxidation, of anthralin or a derivative thereof.This composition contains anthralin or a derivative thereof in a carrier composed of (i) at least one fatty acid alkyl ester, the fatty acid having 12 to 18 carbon atoms and the alkyl radical having 2 or 3 carbon atoms, and (ii) at least one thickener taken from the group made up of silicas having particle sizes less than 30 mμ and polyethylene powders having densities between 0.9 and 0.96 (g/cm3).This composition is used in the treatment of skin diseases, particularly psoriasis.Other References
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