ALEXANDRIA, Va., April 21 -- United States Patent no. 12,609,427, issued on April 21, was assigned to Samsung SDI Co. Ltd. (Yongin-si, South Korea).
"Secondary battery" was invented by Min Hyung Guen (Yongin-si, South Korea), Hyun Soo Lee (Yongin-si, South Korea) and Jun Sun Yong (Yongin-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a secondary battery in which a first region and a second region of an insulation sheet are made of different materials, and thus thermal conduction between an electrode assembly and a cap plate can be blocked, light reflection that may occur during welding can be prevented, and the presence of checking foreign matter can be checke...