ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,449,180, issued on Oct. 21, was assigned to PANASONIC HOLDINGS Corp. (Osaka, Japan).
"Cold storage material and cooler box" was invented by Hironobu Machida (Nara, Japan), Motohiro Suzuki (Osaka, Japan) and Shinsuke Takeguchi (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A cold storage material of the present disclosure includes: tetrahydrofuran; water; and at least one silver compound selected from the group consisting of silver phosphate represented by a chemical formula Ag3PO4, silver carbonate represented by a chemical formula Ag2CO3, and a silver oxide represented by a chemical formula AgO. This cold storage material has a melting po...