Patents by Inventor Kyoumi Tsukida

Kyoumi Tsukida 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: 6367134
    Abstract: A ceramic electronic part producing method, in which when a ceramic electronic part having an internal electrode in a ceramic sintered body and having an external electrode connected to the internal electrode at an outside surface thereof is to be produced, a ceramic sintered body is obtained, and then subjected to dry-type barrel polishing, which does not use water, using a centrifugal barrel device in order to expose the internal electrode from an outside surface of the ceramic sintered body. The method is one in which the problem of deterioration of electrical properties, such as insulation resistance property, caused by entrance of moisture during polishing, seldom occurs and in which a large number of highly reliable ceramic electronic parts can be produced.
    Type: Grant
    Filed: February 2, 2000
    Date of Patent: April 9, 2002
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Yukio Sanada, Shinichiro Kuroiwa, Kyoumi Tsukida, Masayuki Taniguchi
  • Patent number: 6348426
    Abstract: An electrically conductive composition for forming an electrically conductive film through firing. The composition includes metal powder and glass frit as solid components. The glass frit contains a first glass frit which assumes a molten state at least at the maximum temperature during firing and a second glass frit which maintains a glass-ceramic state at the maximum temperature during firing. The first frit has a softening point 100° C. or more lower than the maximum temperature during firing. The content of the first glass frit based on the total amount of glass frit lies within the range of about 25-90 wt. %, and the total amount of glass frit based on the total solid component including metal powder lies within a range of about 3-10 wt. %. Also disclosed are ceramic electronic components and a production process of the components.
    Type: Grant
    Filed: September 15, 1999
    Date of Patent: February 19, 2002
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Yukio Sanada, Shinichiro Kuroiwa, Kyoumi Tsukida