ALEXANDRIA, Va., June 6 -- United States Patent no. 12,283,429, issued on April 22, was assigned to MURATA MANUFACTURING Co. LTD. (Nagaokakyo, Japan).

"Dielectric ceramic and multilayer ceramic capacitor" was invented by Taku Mizuno (Nagaokakyo, Japan), Keisuke Araki (Nagaokakyo, Japan) and Hiroyuki Wada (Nagaokakyo, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A dielectric ceramic that includes multiple crystal grains, each of the multiple crystal grains having an interface, a barium titanate (BaTiO3)-based compound as a main component thereof, and a rare earth element. The dielectric ceramic has a cross-section in which the multiple crystal grains has a concentration varying region, a high concentr...