ALEXANDRIA, Va., June 18 -- United States Patent no. 12,327,880, issued on June 10, was assigned to CALB Co. Ltd. (Jiangsu, China).
"Battery" was invented by 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 an explosion-proof valve and a battery casing. The explosion-proof valve is arranged in the battery casing. The explosion-proof valve is arranged on a first surface of the battery casing, the explosion-proof valve includes a fragile portion. The fragile portion protrudes toward a middle region of the first surface. The fragile portion includes a first end point and a second end point, and an are...