Patents Assigned to TDK Electronic Co.
  • Ferromagneticpiezoelectric ceramic composition
    Patent number: 4184971
    Abstract: A piezoelectric ceramic composition which comprises the combination of a pyrochlore composite oxide Ba.sub.2 Sb.sub.2 O.sub.7, and a base ceramic mixture of PbTiO.sub.3 and PbZrO.sub.3.
    Type: Grant
    Filed: August 26, 1977
    Date of Patent: January 22, 1980
    Assignee: TDK Electronic Co.
    Inventors: Yoichi Tanaka, Masamichi Tsuruta, Koji Takahashi, Tsutomu Hasegawa, Makoto Hori