Patents by Inventor Norikazu Tachibana

Norikazu Tachibana 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).

  • Method for producing barium titanate-based powder, and multilayer ceramic capacitor
    Patent number: 10315928
    Abstract: A method for producing a barium titanate-based powder that includes mixing a titanium compound and a barium compound together with water and chlorine to prepare a slurry, and temporarily firing the mixture of the titanium compound and the barium compound which is contained in the slurry to provide a barium titanate-based powder. The chlorine in the slurry is in the form of chlorine ions in a ratio of 230 to 1100 wt ppm based on the amount of the barium titanate-based powder to be synthesized.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: June 11, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Hiroko Ajichi, Toshiharu Nakagawa, Wenjun Wang, Sanae Nakae, Norikazu Tachibana
  • METHOD FOR PRODUCING BARIUM TITANATE-BASED POWDER, AND MULTILAYER CERAMIC CAPACITOR
    Publication number: 20160137523
    Abstract: A method for producing a barium titanate-based powder that includes mixing a titanium compound and a barium compound together with water and chlorine to prepare a slurry, and temporarily firing the mixture of the titanium compound and the barium compound which is contained in the slurry to provide a barium titanate-based powder. The chlorine in the slurry is in the form of chlorine ions in a ratio of 230 to 1100 wt ppm based on the amount of the barium titanate-based powder to be synthesized.
    Type: Application
    Filed: November 6, 2015
    Publication date: May 19, 2016
    Inventors: HIROKO AJICHI, Toshiharu Nakagawa, Wenjun Wang, Sanae Nakae, Norikazu Tachibana
  • Method for producing perovskite type composite oxide
    Patent number: 8771631
    Abstract: A method is provided which includes a reaction step of reacting at least titanium oxide, a calcium compound, and barium hydroxide in a slurry solution so as to produce a perovskite-type composite oxide. The perovskite-type composite oxide is represented by (Ba1-xCax)mTiO3, and x is within a range of 0<x?0.125. In addition, the method provides a perovskite-type composite oxide in which a water-soluble calcium compound is used as the calcium compound, and when the perovskite-type composite oxide is represented by (Ba1-xCax)mTiO3, x is within a range of 0<x?0.20.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: July 8, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Toshiharu Nakagawa, Norikazu Tachibana, Yasunari Nakamura
  • METHOD FOR PRODUCING PEROVSKITE TYPE COMPOSITE OXIDE
    Publication number: 20120216941
    Abstract: A method is provided which includes a reaction step of reacting at least titanium oxide, a calcium compound, and barium hydroxide in a slurry solution so as to produce a perovskite-type composite oxide. The perovskite-type composite oxide is represented by (Ba1-xCax)mTiO3, and x is within a range of 0<x?0.125. In addition, the method provides a perovskite-type composite oxide in which a water-soluble calcium compound is used as the calcium compound, and when the perovskite-type composite oxide is represented by (Ba1-xCax)mTiO3, x is within a range of 0<x?0.20.
    Type: Application
    Filed: February 22, 2012
    Publication date: August 30, 2012
    Inventors: TOSHIHARU NAKAGAWA, Norikazu Tachibana, Yasunari Nakamura