ALEXANDRIA, Va., June 16 -- United States Patent no. 12,308,465, issued on May 20, was assigned to CALB Co. Ltd. (Jiangsu, China).
"Battery" was invented by Hao Zhao (Changzhou, China), Jiuling Xu (Changzhou, China), Yongjie Zhang (Luoyang, China) and Lulu Zhang (Changzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A battery includes a battery casing and an explosion-proof valve. The battery casing includes a first casing member and a second casing member, and the first casing member and the second casing member are welded to form a welded connection region between the first casing member and the second casing member. The welded connection region includes a first region, a second region, and a cor...