ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,391,827, issued on Aug. 19, was assigned to TOYOBO Co. LTD. (Osaka, Japan).
"Biaxially stretched polyamide film" was invented by Kazushige Ueda (Inuyama, Japan), Takamichi Goto (Inuyama, Japan) and Takuro Endo (Inuyama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "It is provided that a biaxially stretched polyamide film that has excellent resistance to pinhole formation due to bending, has excellent resistance to pinhole formation due to repeated contact, has excellent piercing resistance, and further can suppress generation of foreign matter during film formation. A biaxially stretched polyimide film comprising a functional layer (layer B) lami...