ALEXANDRIA, Va., March 26 -- United States Patent no. 12,257,328, issued on March 25, was assigned to JO Cosmetics Co. Ltd. (Tokyo).
"Oil-based solid cosmetic" was invented by Ryuta Yuasa (Tokyo), Kazuki Uchida (Kanagawa, Japan) and Yusuke Akizuki (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A solid cosmetic which contains 1 to 30% by mass of (A) a solid oil component having a melting point of 50 to 120deg C., 50 to 95% by mass % of (B) a liquid oil component, 3 to 40% by mass % of (C) a nonionic surfactant having an HLB value of 5 to 13, 0.1 to 20% by mass % of (D) a powder having a volume average particle diameter of 1 to 200 micro metre, and 0.1 to 10% by mass of (E) fumed silica is excellent in ...