ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,472,451, issued on Nov. 18, was assigned to MURATA MANUFACTURING Co. LTD. (Nagaokakyo, Japan).

"Composite fiber" was invented by Takako Nishiura (Nagaokakyo, Japan), Takashi Tateishi (Nagaokakyo, Japan), Masayuki Tsuji (Nagaokakyo, Japan) and Eiji Taguchi (Nagaokakyo, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A composite fiber having a core sheath-structure that includes a core portion having an electrically conductive material, and a sheath portion having a ceramic component covering the core portion. The composite fiber is constructed such that, when the core portion is connected to a ground, the sheath portion exhibits one of a positive su...