ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,428,778, issued on Sept. 30, was assigned to TEIJIN Ltd. (Osaka, Japan).

"Carbon fiber bundle with adhered sizing agent" was invented by Taisuke Fujimoto (Osaka, Japan), Akimichi Oda (Osaka, Japan) and Hidekazu Yoshikawa (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A carbon fiber bundle having a high abrasion resistance property and simultaneously being excellent in widening property is provided by a carbon fiber bundle with an adhered sizing agent including a carbon fiber bundle, and a sizing agent adhered to a surface of the carbon fiber bundle, wherein the sizing agent contains an epoxy compound, and shows an intersection of a storag...