Method of treating the skin with organic acids in anhydrous microsphere delivery systems
April 28, 2018. 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 References 3920835 Use as insecticides of esters of nitro(tetrahydro-2H-1,3-thiazin-2-ylidene)acetic acids Treatment of body odor and disturbed keratinization -Hydroxyretinoic acid, -ketoretinoic acid and mixtures and their use in treating skin conditions Alpha hydroxyacids, alpha ketoacids and their use in treating skin conditions Segmented polyether polyurethane Biostable, segmented aliphatic polyurethanes and process therefor Thermally reversible polyurethane hydrogels and cosmetic, biological and medical uses 5118779 Biostable polyurethane products InventorsApplicationNo. 069089 filed on 04/28/1998US Classes:424/450, Liposomes514/557, Carboxylic acid, percarboxylic acid, or salt thereof (e.g., peracetic acid, etc.)514/574Polycarboxylic acid or salt thereofExaminersPrimary: Jarvis, William R. A.Attorney, Agent or FirmForeign Patent References
International ClassesA61K 009/127A61K 031/19 AbstractThere is provided a method of treating skin with a therapeutic, water-soluble organic acid. There is also provided an anhydrous composition containing the water-soluble organic acid is encapsulated into hydrophobic microspheres through which the organic acid can elute in the presence of water is applied to the skin. The composition is wet with water immediately prior to, or after the composition is applied to the skin. | |
