ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,738,537, issued on Sept. 15, was assigned to DAIKIN INDUSTRIES LTD. (Osaka, Japan).

"Composite, polymer electrolyte, electrochemical device, polymer-based solid-state battery, and actuator" was invented by Akinori Tani (Osaka, Japan), Junpei Terada (Osaka, Japan), Takaya Yamada (Osaka, Japan) and Kae Fujiwara (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A composite containing a fluorine-containing copolymer, an alkali metal salt, and an ionic liquid. The fluorine-containing copolymer essentially contains: a structural unit represented by formula (1): -[CR1R2-CR3R4]- wherein R1 to R4 are each independently H, F, Cl, CF3, or OR10, where R...