ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,721,386, issued on Sept. 1, was assigned to MURATA MANUFACTURING Co. LTD. (Nagaokakyo, Japan).
"Mask" was invented by Masayoshi Takagi (Nagaokakyo, Japan), Daiji Tamakura (Nagaokakyo, Japan), Kenichiro Takumi (Nagaokakyo, Japan), Ryosuke Ebina (Osaka, Japan) and Koji Takeshita (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A mask for covering at least a nostril and a mouth of a wearer. The mask includes a main body portion and an ear hooking portion attached to the main body portion. At least a part of the main body portion has a sheet-like piezoelectric portion, and the piezoelectric portion includes a yarn formed of an electric field for...