ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,544,819, issued on Feb. 10, was assigned to DAIWA CAN COMPANY (Chiyoda-ku, Japan).
"Manufacturing method of rectangular battery can" was invented by Minoru Fukunaga (Sagamihara, Japan), Kazuhiro Saeki (Sagamihara, Japan) and Yasushi Enoki (Sagamihara, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of manufacturing a rectangular battery includes: ironing the blank thereby forming an interim cup including an interim bottom whose area is larger than a bottom plate of the rectangular battery can, an inclined wall tilting upwardly formed continuously from each longitudinal end of the interim bottom, a short side wall formed continuously from t...