Patents Assigned to Taiyo Yuden Kabusikigaisha
  • Patent number: 5184277
    Abstract: A ceramic capacitor having excellent electric characteristics includes internal electrodes comprising a base metal such as Ni, and a method for fabricating the capacitor includes the step of firing under a non-oxidation atmosphere. A dielectric layer of the ceramic capacitor comprises a basic and additional components. The basic components comprises a material represented by the following formula:(1-.alpha.) {(Ba.sub.k-x-z M.sub.x L.sub.z)O.sub.k (Ti.sub.1-y R.sub.y)O.sub.2-y/2 }+.alpha.BaZrO.sub.3where, M is Mg and/or Zn, L is Ca and/or Sr, R is a rare earth element, and .alpha., k, x, z and y are nuermals fulfilling the conditions of 0.005.ltoreq..alpha..ltoreq.0.04, 1.00.ltoreq.k.ltoreq.k.ltoreq.1.05, 0<x<0.10, 0<z.ltoreq.0.05, 0.01.ltoreq.x+z.ltoreq.0.10, and 0<y.ltoreq.0.04. The additional component comprises Li.sub.2 O (or B.sub.2 O.sub.3), SiO.sub.2 and MO (MO is at least one metal oxide selected from the group consisting of BaO, SrO, CaO, MgO and ZnO).
    Type: Grant
    Filed: October 17, 1991
    Date of Patent: February 2, 1993
    Assignee: Taiyo Yuden Kabusikigaisha
    Inventors: Hisamitsu Shizuno, Hirosi Kisi, Hirosi Saito, Makoto Fujii
  • Patent number: 5181157
    Abstract: A ceramic capacitor having excellent electric characteristics which includes internal electrodes essentially comprising a base metal such as Ni, and a method for fabricating the capacitor includes the step of firing under a non-oxidation atmosphere. A dielectric layer of the ceramic capacitor comprises basic and additional components. The basic component comprises a material represented by the following formula:(Ba.sub.k-(x+y) M.sub.x L.sub.y)O.sub.k (Ti.sub.1-z R.sub.z)O.sub.2-l z/2where, M is Mg and/or Zn, L is Ca and/or Sr, R is a rare earth element, and k, x, z and y are numerals fulfilling the conditions of 1.00.ltoreq.k.ltoreq.1.05, 0<x<0.10, 0<y.ltoreq.0.05, 0.01.ltoreq.x+y<0.10, and 0.002<z.ltoreq.0.06. The additional component consists comprises Li.sub.2 O )or B.sub.2 O.sub.3), SiO.sub.2 and MO (MO is at least one metal oxide selected from the group consisting of BaO, SrO, CaO, MgO and ZnO).
    Type: Grant
    Filed: October 17, 1991
    Date of Patent: January 19, 1993
    Assignee: Taiyo Yuden Kabusikigaisha
    Inventors: Hirokazu Chazono, Mutsumi Honda, Hirosi Kisi, Hirosi Saito, Hisamitsu Shizuno