Patents by Inventor Yoichiro Hoshi

Yoichiro Hoshi 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).

  • Patent number: 8335073
    Abstract: A dielectric ceramic composition includes, as a main component, a compound having perovskite type crystal structure shown by a general formula ABO3, as subcomponents, in terms of respective element with respect to 100 moles of the compound, and 0.6 to 2.0 moles of an oxide of Mg, 0.010 to 0.6 mole of oxide of Mn and/or Cr, 0.010 to 0.2 mole of an oxide of at least one selected from V, Mo and W, 0.10 to 1.0 mole of an oxide of R1 (R1 is at least one selected from Y, Yb, Er and Ho), 0.10 to 1.0 mole of an oxide of R2 (R2 is at least one selected from Dy, Gd and Tb) and 0.2 to 1.5 moles of a component consisting of an oxide of Ba and/or oxide of Ca and an oxide of Si. According to the present invention, even when a dielectric layer is made thinner, a dielectric ceramic composition having good characteristics can be provided.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: December 18, 2012
    Assignee: TDK Corporation
    Inventors: Kazuhiro Komatsu, Yoichiro Hoshi, Shuhei Yoshikawa, Yuichiro Sueda
  • Publication number: 20110222206
    Abstract: A dielectric ceramic composition includes, as a main component, a compound having perovskite type crystal structure shown by a general formula ABO3, as subcomponents, in terms of respective element with respect to 100 moles of the compound, and 0.6 to 2.0 moles of an oxide of Mg, 0.010 to 0.6 mole of oxide of Mn and/or Cr, 0.010 to 0.2 mole of an oxide of at least one selected from V, Mo and W, 0.10 to 1.0 mole of an oxide of R1 (R1 is at least one selected from Y, Yb, Er and Ho), 0.10 to 1.0 mole of an oxide of R2 (R2 is at least one selected from Dy, Gd and Tb) and 0.2 to 1.5 moles of a component consisting of an oxide of Ba and/or oxide of Ca and an oxide of Si. According to the present invention, even when a dielectric layer is made thinner, a dielectric ceramic composition having good characteristics can be provided.
    Type: Application
    Filed: March 9, 2011
    Publication date: September 15, 2011
    Applicant: TDK CORPORATION
    Inventors: Kazuhiro KOMATSU, Yoichiro HOSHI, Shuhei YOSHIKAWA, Yuichiro SUEDA