US Patent Issued to DAIKIN INDUSTRIES on Sept. 9 for "Piezoelectric film having a vinylidenefluoride/tetrafluoroethylene copolymer film" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,414,475, issued on Sept. 9, was assigned to DAIKIN INDUSTRIES LTD. (Osaka, Japan).

"Piezoelectric film having a vinylidenefluoride/tetrafluoroethylene copolymer film" was invented by Tetsuhiro Kodani (Osaka, Japan), Saori Sakami (Osaka, Japan), Shinya Bitou (Osaka, Japan), Takashi Kanemura (Osaka, Japan) and Akinari Sugiyama (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An object is to provide a piezoelectric film with good piezoelectricity. This object can be achieved by a piezoelectric film comprising a vinylidene fluoride/tetrafluoroethylene copolymer film and having a residual polarization amount of 40 mC/m2 or more."

The patent was...