Patents by Inventor Masataka Kida

Masataka Kida 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 of making lead zirconate titanate-based ceramic powder, piezoelectric ceramic and method for making same, and piezoelectric ceramic element
    Patent number: 6825143
    Abstract: The present invention relates to a method for producing a lead zirconate titanate-based ceramic powder containing uniform, fine lead zirconate titanate, using a solid-phase method. The method includes the steps of mixing a lead oxide powder, a zirconium oxide powder, and a titanium oxide powder to form a mixed base powder; and heat-treating the mixed base powder so that lead oxide in the lead oxide powder and titanium oxide in the titanium oxide powder react to produce lead titanate, and that unreacted lead oxide not used in the reaction, the lead titanate produced by the reaction, and zirconium oxide in the zirconium oxide powder react to produce the lead zirconate titanate-based ceramic powder containing lead zirconate titanate.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: November 30, 2004
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Kenichi Nada, Kazunari Okada, Masataka Kida
  • Method of making lead zirconate titanate-based ceramic powder, piezoelectric ceramic and method for making same, and piezoelectric ceramic element
    Publication number: 20030096696
    Abstract: The present invention relates to a method for producing a lead zirconate titanate-based ceramic powder containing uniform, fine lead zirconate titanate, using a solid-phase method. The method includes the steps of mixing a lead oxide powder, a zirconium oxide powder, and a titanium oxide powder to form a mixed base powder; and heat-treating the mixed base powder so that lead oxide in the lead oxide powder and titanium oxide in the titanium oxide powder react to produce lead titanate, and that unreacted lead oxide not used in the reaction, the lead titanate produced by the reaction, and zirconium oxide in the zirconium oxide powder react to produce the lead zirconate titanate-based ceramic powder containing lead zirconate titanate.
    Type: Application
    Filed: October 4, 2002
    Publication date: May 22, 2003
    Inventors: Kenichi Nada, Kazunari Okada, Masataka Kida
  • Piezoelectric ceramic material, electronic part using the ceramic
    Patent number: 6511763
    Abstract: A piezoelectric ceramic material having excellent mechanical strength, excellent resistance to chemicals, and excellent moisture resistance. The piezoelectric ceramic material contains lead oxide, wherein a closed region observed under a transmission electron microscope and defined by a plurality of crystal grains which constitute the sintered piezoelectric ceramic material and are adjacent to one another is predominantly formed of an amorphous phase.
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: January 28, 2003
    Assignee: Murata Manufacturing Co. Ltd.
    Inventors: Masataka Kida, Masayoshi Katsube
  • Piezoelectric ceramic, method for producing piezoelectric ceramic, and piezoelectric oscillator
    Publication number: 20030006677
    Abstract: A piezoelectric ceramic comprising lead titanate as a primary component, wherein the primary component contains a titanium oxide crystalline phase. Methods for producing the ceramic, and piezoelectric oscillators making use of the ceramic are also disclosed.
    Type: Application
    Filed: July 29, 2002
    Publication date: January 9, 2003
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Akihito Okuda, Akinobu Takamura, Masataka Kida, Yoshiaki Kohno
  • Piezoelectric ceramic, method for producing piezoelectric ceramic, and piezoelectric oscillator
    Patent number: 6479923
    Abstract: A piezoelectric ceramic comprising lead titanate as a primary component, wherein the primary component contains a titanium oxide crystalline phase. Methods for producing the ceramic, and piezoelectric oscillators making use of the ceramic are also disclosed.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: November 12, 2002
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Akihito Okuda, Akinobu Takamura, Masataka Kida, Yoshiaki Kohno
  • Piezoelectric ceramic, method for producing piezoelectric ceramic, and piezoelectric oscillator
    Publication number: 20010013741
    Abstract: A piezoelectric ceramic comprising lead titanate as a primary component, wherein the primary component contains a titanium oxide crystalline phase. Methods for producing the ceramic, and piezoelectric oscillators making use of the ceramic are also disclosed.
    Type: Application
    Filed: March 1, 2001
    Publication date: August 16, 2001
    Inventors: Akihito Okuda, Akinobu Takamura, Masataka Kida, Yoshiaki Kohno