Patents by Inventor Norio Tsubouchi

Norio Tsubouchi 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).

  • Barium titanate base ceramic composition having a high dielectric constant
    Patent number: RE29484
    Abstract: A ceramic composition having a high dielectric constant which has good stability with temperature variation and the passage of time includes BaTiO.sub.3 in which the molecular ratio of Ba to Ti ranges from about 0.9 to 1.1 as the basic constituent and about 0.1 to 10 mol % of at least one compound selected from the group of Nb.sub.2 O.sub.5 and Ta.sub.2 O.sub.5 and about 0.01 to 15 mol % of at least one compound selected from the group consisting of In.sub.2 O.sub.3, Ga.sub.2 O.sub.3, Tl.sub.2 O.sub.3, MgO, ZnO and NiO as sub constituents.
    Type: Grant
    Filed: October 4, 1976
    Date of Patent: November 29, 1977
    Assignee: Nippon Electric Company, Limited
    Inventors: Kazuaki Utsumi, Norio Tsubouchi, Tomeji Ohno