ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,537,272, issued on Jan. 27, was assigned to PRIME PLANET ENERGY & SOLUTIONS INC. (Tokyo).
"Secondary battery" was invented by Katsuji Tsujioka (Nishinomiya, Japan) and Hiroshi Takabayashi (Koriyama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a technology to suppress a decrease in airtightness around a liquid injection port of a secondary battery. A secondary battery disclosed here has a lid having a liquid injection port, a resin washer attached to the liquid injection port, and a sealing member. The sealing member has a sleeve inserted into the liquid injection port and a flange extending from the sleeve along an outer surface of ...