Patents by Inventor Noriyuki Kohzu

Noriyuki Kohzu 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 and ceramic capacitor
    Patent number: 6656865
    Abstract: A ceramic capacitor containing at least one dielectric layer formed from a dielectric ceramic composition comprising a sintered body containing ceramic particles having a core/shell structure in an amount of 15% or more based on the total ceramic particles of the sintered body, the core/shell structured particle being composed of a core portion, which is BaTiO3 crystal, and a shell portion surrounding the core portion, which is made of a solid solution comprising BaTiO3 as a major component, has excellent temperature characteristics and a long life-time.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: December 2, 2003
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Kenji Saito, Koichiro Morita, Youichi Mizuno, Yasunobu Kawamoto, Yoshikazu Okino, Noriyuki Kohzu, Hirokazu Chazono
  • Dielectric ceramics, multilayer ceramic electric parts and method for the manufacture thereof
    Patent number: 6437969
    Abstract: Dielectric ceramic includes dielectric ceramic grains having BaTiO3 as a major component thereof, a portion of the dielectric ceramic grains having a ferroelectric core and a paraelectric shell into which Mg and a rare earth element are diffused. The shell being located at least on a part of a surface of the core, wherein the shell includes at least two shell portions having different components diffused thereinto. The shell portions can be radially disposed on one another or be in direct contact with the surface of the core.
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: August 20, 2002
    Assignee: Taiyo Yuden Co. Ltd.
    Inventors: Youichi Mizuno, Yoshikazu Okino, Kenji Saito, Noriyuki Kohzu
  • Dielectric ceramic composition and ceramic capacitor
    Publication number: 20020016249
    Abstract: A ceramic capacitor containing at least one dielectric layer formed from a dielectric ceramic composition comprising a sintered body containing ceramic particles having a core/shell structure in an amount of 15% or more based on the total ceramic particles of the sintered body, the core/shell structured particle being composed of a core portion, which is BaTiO3 crystal, and a shell portion surrounding the core portion, which is made of a solid solution comprising BaTiO3 as a major component, has excellent temperature characteristics and a long life-time.
    Type: Application
    Filed: June 29, 2001
    Publication date: February 7, 2002
    Inventors: Kenji Saito, Koichiro Morita, Youichi Mizuno, Yasunobu Kawamoto, Yoshikazu Okino, Noriyuki Kohzu, Hirokazu Chazono
  • Dieletric ceramics, multilayer ceramic electric parts and method for the manufacture thereof
    Publication number: 20010021095
    Abstract: Dielectric ceramic includes dielectric ceramic grains having BaTiO3 as a major component thereof, a portion of the dielectric ceramic grains having a ferroelectric core and a paraelectric shell into which Mg and a rare earth element are diffused. The shell being located at least on a part of a surface of the core, wherein the shell includes at least two shell portions having different components diffused thereinto. The shell portions can be radially disposed on one another or be in direct contact with the surface of the core.
    Type: Application
    Filed: February 23, 2001
    Publication date: September 13, 2001
    Applicant: Taiyo Yuden Co. Ltd.
    Inventors: Youichi Mizuno, Yoshikazu Okino, Kenji Saito, Noriyuki Kohzu