Topical compositions
Patent 4009254 Issued on February 22, 1977. Estimated Expiration Date: 
February 22, 1994. 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.
February 22, 1994. 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 2847477 2856436 2942008 3220969 3751563 InventorApplicationNo. 661203 filed on 02/25/1976US Classes:424/59, TOPICAL SUN OR RADIATION SCREENING, OR TANNING PREPARATIONS424/60, Aromatic acid or derivative containing (e.g., aminobenzoic acid or methyl salicylate, etc.)514/722AcyclicExaminersPrimary: Moyer, Donald B.Attorney, Agent or FirmInternational ClassA61K 47/08 (20060101)AbstractSkin treatment with a composition containing an unsymmetrical ether of the formula R1 --o--R2 wherein R1 is alkyl or alkenyl of about 8 to 20 carbon atoms and R2 is C1-3 alkyl or C2-3 alkenyl.Other References
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