Patents by Inventor Syunichi Yuri

Syunichi Yuri 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).

  • Ceramic powder and multilayer ceramic device
    Patent number: 6905995
    Abstract: A ceramic powder including ceramic main component particles and additive component particles deposited on the surfaces of the main component particles. The mean particle size of the main component particles is made not more than 1.5 ?m, and the mean particle size of the additive component particles is made not more than 0.31 ?m. The content of the additive composition particles is made 0.1 to 5 wt % with respect to 100 parts by weight of the ceramic powder. The dispersibility of the additive component particles with respect to the main component particles is improved and the uniformity of the structure is promoted to suppress the occurrence of hetero phases. A multilayer ceramic electronic device having a high insulation breakdown voltage and long life even with a thickness of the dielectric layers of not more than 3 ?m are provided.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: June 14, 2005
    Assignee: TDK Corporation
    Inventors: Takashi Kamiya, Osamu Otani, Kaname Ueda, Syunichi Yuri, Hitoshi Tanaka
  • Ceramic powder and multilayer ceramic device
    Publication number: 20030199385
    Abstract: A ceramic powder including ceramic main component particles and additive component particles deposited on the surfaces of the main component particles. The mean particle size of the main component particles is made not more than 1.5 &mgr;m, and the mean particle size of the additive component particles is made not more than 0.31 &mgr;m. The content of the additive composition particles is made 0.1 to 5 wt % with respect to 100 parts by weight of the ceramic powder. The dispersibility of the additive component particles with respect to the main component particles is improved and the uniformity of the structure is promoted to suppress the occurrence of hetero phases. A multilayer ceramic electronic device having a high insulation breakdown voltage and long life even with a thickness of the dielectric layers of not more than 3 &mgr;m are provided.
    Type: Application
    Filed: March 19, 2003
    Publication date: October 23, 2003
    Applicant: TDK CORPORATION
    Inventors: Takashi Kamiya, Osamu Otani, Kaname Ueda, Syunichi Yuri, Hitoshi Tanaka