US Patent Issued to TEIJIN on Oct. 7 for "Method for manufacturing precursor fiber bundle, method for manufacturing carbon fiber bundle, and carbon fiber bundle" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,435,451, issued on Oct. 7, was assigned to TEIJIN Ltd. (Osaka, Japan).

"Method for manufacturing precursor fiber bundle, method for manufacturing carbon fiber bundle, and carbon fiber bundle" was invented by Yosuke Nakamura (Osaka, Japan), Atsumi Nishida (Osaka, Japan) and Hidekazu Yoshikawa (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for manufacturing a precursor fiber bundle provides precursor fiber bundles used in manufacturing carbon fiber bundles allowing high productivity and having high tensile strength with less yarn bundle divides in the fiber bundles. The method for manufacturing a precursor fiber bundle includes spinn...