ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,741,911, issued on Sept. 22, was assigned to TAIYO YUDEN Co. LTD. (Tokyo).
"Dielectric ceramic composition and multilayer ceramic electronic device" was invented by Kazuki Misawa (Tokyo) and Keiichi Hatano (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A dielectric ceramic composition includes a first crystal grain that has a perovskite structure expressed by a general formula of BaCaTiO3, and has a core portion and a shell portion surrounding the core portion and including a rare earth element and manganese, and a second crystal grain in which an elemental ratio of total of barium and calcium to titanium is 0.70 or less and a main component is ...