ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,384,892, issued on Aug. 12, was assigned to TOYOBO Co. LTD. (Osaka, Japan).
"Biaxially oriented polypropylene film" was invented by Kouji Yamada (Otsu, Japan), Kazuhito Horinouchi (Otsu, Japan), Mahiro Nakano (Inuyama, Japan) and Toru Imai (Inuyama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention provides a biaxially oriented polypropylene film, wherein a relationship between a loop stiffness stress (S [mN]) in a longitudinal direction and a thickness (t [micro metre]) satisfies the formula Sless than=0.00020xt3, a relationship between a loop stiffness stress (S [mN]) in a width direction and the thickness (t [micro metre]) satisfies ...