Patents by Inventor Isao Ishiguchi

Isao Ishiguchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Dielectric ceramic composition
    Patent number: 4716134
    Abstract: There is provided a dielectric ceramic composition which comprises (Pb,La)(Zr,Ti)O.sub.3 and Pb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3 in the ratio defined by the formula below.x(Pb.sub.1-u La.sub.u)(Zr.sub.1-v Ti.sub.v)O.sub.3.(1-x)Pb(Mg.sub.1/3 Nb.sub.2/3)O.sub.3wherein0.10.ltoreq.u.ltoreq.0.280.25.ltoreq.v.ltoreq.1.000.03.ltoreq.x.ltoreq.0.
    Type: Grant
    Filed: November 12, 1986
    Date of Patent: December 29, 1987
    Assignee: Mitsubishi Mining and Cement Co., Ltd.
    Inventors: Takashi Yamaguchi, Isao Ishiguchi, Takeshi Inoue
  • Ceramic capacitor
    Patent number: 4447853
    Abstract: There is disclosed a ceramic capacitor comprising a polycrystalline ceramic dielectric material disposed between electrodes of conductive material with the polycrystalline ceramic dielectric material having a thickness not more than 30 .mu.m and a particle size not more than one fifth of the thickness of the dielectric material.
    Type: Grant
    Filed: August 1, 1983
    Date of Patent: May 8, 1984
    Assignee: Mitsubishi Mining & Cement Company, Ltd.
    Inventors: Noboru Tomuro, Isao Ishiguchi, Shinjiro Tsujikawa, Masao Kashima, Yasuo Miyashita