ALEXANDRIA, Va., July 15 -- United States Patent no. 12,661,327, issued on June 23, was assigned to TEIKOKU SEIYAKU Co. LTD. (Kagwa, Japan).
"Aqueous patch" was invented by Masahiro Inazuki (Kagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The purpose of the present invention is to provide an aqueous patch in which basic physical properties as an aqueous patch are less likely to deteriorate and crystals of 1-menthol are less likely to precipitate. The aqueous patch includes, in a pasty preparation, 1-menthol: 0.5% by mass or more and 10% by mass or less, an oil component: 0.2% by mass or more and 19% by mass or less; and silica: 0.1% by mass or more and 5.5% by mass or less."
The patent was file...