ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,424,700, issued on Sept. 23, was assigned to Dai Nippon Printing Co. Ltd. (Tokyo).
"Heat sealing apparatus for a battery" was invented by Youichi Mochizuki (Tokyo), Atsuko Takahagi (Tokyo), Rikiya Yamashita (Tokyo) and Miho Sasaki (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A battery includes a battery element, a housing body, and a valve device. The housing body houses the battery element. The valve device is in communication with the inside of the housing body. Heat-sealable resin layers face each other in a peripheral edge portion of the housing body. A joined edge portion in which the mutually facing heat-sealable resin layers are fused t...