ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,448,515, issued on Oct. 21, was assigned to TOYOBO MC Corp. (Osaka, Japan).
"Method for producing polyamide resin composition" was invented by Nobuhiro Yoshimura (Shiga, Japan) and Ryo Umeki (Shiga, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for producing a polyamide resin composition containing a crystalline polyamide resin (A) containing a polycaproamide resin as a main component, a semi-aromatic amorphous polyamide resin (B), an inorganic reinforcing material (C), a master batch of carbon black (D), and a copper compound (E); a dispersion liquid of the copper compound (E) has a concentration of 0.04% by mass to 1.0% by mass; and th...