ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,237,518, issued on Feb. 25, was assigned to PANASONIC ENERGY Co. LTD. (Osaka, Japan).
"Cylindrical battery" was invented by Ryota Okimoto (Osaka, Japan) and Oose Okutani (Hyogo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A cylindrical battery having a bottomed cylindrical outer can including a bottom surface part and a side surface part; a sealing body that closes an opening part of the outer can; and a gasket disposed between the outer can and the sealing body. The outer can has: a groove part that is formed such that a side surface section thereof extends from the outside to the inside and supports the sealing body with the gasket therebetwe...