ALEXANDRIA, Va., June 2 -- United States Patent no. 12,643,964, issued on June 2, was assigned to DAIKIN INDUSTRIES LTD. (Osaka, Japan).
"Composition, stretched body and method of manufacturing thereof" was invented by Takahiro Taira (Osaka, Japan), Chiaki Okui (Osaka, Japan), Hirotoshi Yoshida (Osaka, Japan), Yuuji Tanaka (Osaka, Japan), Taku Yamanaka (Osaka, Japan) and Taketo Kato (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A composition having a breaking strength of 10.0 N or more, containing a polytetrafluoroethylene, and substantially free from a compound represented by the following General Formula (3): (H-(CF2)8-SO3)qM2, wherein M2 is H, a metal atom, NR54, where each R5 may be the sa...