Patents by Inventor Takehisa Sasabayashi

Takehisa Sasabayashi 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: 7273825
    Abstract: The dielectric ceramic has a composition represented by general formula 100(Ba1-x-ySrxCay)m(Ti1-zZrz)O3+aBaO+bR2O3+cMgO+dMnO+eCuO+fV2O5+gXuOv (where R is a rare-earth element such as La, Ce or Pr; and XuOv is an oxide group including at least Si); and 0?x?0.05, 0?y?0.08 (preferably 0.02?y?0.08), 0?z?0.05, 0.990?m, 100.2?(100 m+a)?102, 0.05?b?0.5, 0.05?c?2, 0.05?d?1.3, 0.1?e?1.0, 0.02?f?0.15, and 0.2?g?2. With this composition, a monolithic ceramic capacitor retaining good dielectric characteristics and temperature characteristics even if a high field strength voltage is applied by further thinning the dielectric layers thereof and having excellent reliability achieving good isolating property, dielectric strength, and high-temperature load life is obtained.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: September 25, 2007
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Kazuo Muto, Tomoyuki Nakamura, Akira Kato, Harunobu Sano, Takehisa Sasabayashi, Takashi Hiramatsu
  • Publication number: 20070142210
    Abstract: The dielectric ceramic has a composition represented by general formula 100(Ba1-x-ySrxCay)m(Ti1-zZrz)O3+aBaO+bR2O3+cMgO+dMnO+eCuO+fV2O5+gXuOv (where R is a rare-earth element such as La, Ce or Pr; and XuOv is an oxide group including at least Si); and 0?x?0.05, 0?y?0.08 (preferably 0.02?y?0.08), 0?z?0.05, 0.990?m, 100.2?(100 m+a)?102, 0.05?b?0.5, 0.05?c?2, 0.05?d?1.3, 0.1?e?1.0, 0.02?f?0.15, and 0.2?g?2. With this composition, a monolithic ceramic capacitor retaining good dielectric characteristics and temperature characteristics even if a high field strength voltage is applied by further thinning the dielectric layers thereof and having excellent reliability achieving good isolating property, dielectric strength, and high-temperature load life is obtained.
    Type: Application
    Filed: January 25, 2007
    Publication date: June 21, 2007
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Kazuo Muto, Tomoyuki Nakamura, Akira Kato, Harunobu Sano, Takehisa Sasabayashi, Takashi Hiramatsu
  • Publication number: 20070135295
    Abstract: Dielectric ceramic having a high dielectric constant of 5,500 or more and exhibiting good dielectric constant temperature characteristic, and a small, high-capacitance monolithic ceramic capacitor having an electrostatic capacitance temperature characteristic satisfying the X5R characteristic are provided. The dielectric ceramic includes a BaTiO3 based or (Ba,Ca)TiO3 based primary component, a rare-earth element and Cu, and has a structure composed of crystal grains and grain boundaries between the crystal grains.
    Type: Application
    Filed: January 19, 2007
    Publication date: June 14, 2007
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Takehisa Sasabayashi, Masayuki Ishihara, Tomoyuki Nakamura, Harunobu Sano