ALEXANDRIA, Va., July 7 -- United States Patent no. 12,673,386, issued on July 7, was assigned to PRIME PLANET ENERGY & SOLUTIONS INC. (Tokyo).
"Method of manufacturing secondary battery" was invented by Shota Nakayama (Kasai, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of manufacturing a secondary battery according to the disclosure includes an attaching step of attaching a sealing plate to an open end of a case main body including a closed bottom, and a welding step of laser-welding the case main body and the sealing plate together by scanning a laser beam along a peripheral edge portion of the sealing plate. In the welding step, the laser beam applied to the peripheral edge portion of th...