ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,424,688, issued on Sept. 23, was assigned to PANASONIC ENERGY Co. LTD. (Osaka, Japan) and PANASONIC HOLDINGS Corp. (Osaka, Japan).
"Cylindrical battery" was invented by Ryo Kashimura (Osaka, Japan), Oose Okutani (Hyogo, Japan) and Shinya Geshi (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A cylindrical battery wherein a central part of a sealing plate, fixed by swaging to an opening of an external packaging can, is configured to be warped toward the inner part of the battery. One embodiment is provided with: an electrode body in which a positive electrode plate and a negative electrode plate are rolled with a separator being disposed the...