US Patent Issued to Mitsubishi Chemical on July 21 for "Method of producing fiber assembly and method of producing prepreg sheet" (Japanese Inventors)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,686,152, issued on July 21, was assigned to Mitsubishi Chemical Corp. (Tokyo).

"Method of producing fiber assembly and method of producing prepreg sheet" was invented by Kazuki Tsujikawa (Tokyo), Takeshi Ishikawa (Tokyo), Jun Matsui (Tokyo) and Masashi Ikeda (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for producing a fiber assembly, including: putting a plurality of fibers and a fiber treatment agent into a stirring tank; and stirring a mixture of the fibers and the fiber treatment agent with a stirring blade to granulate the mixture, wherein the fibers include carbon fibers, and the mixture is granulated such that the fibers are alig...