Patents by Inventor Michihiro Murata

Michihiro Murata 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).

  • Humidity sensitive device
    Patent number: 4328478
    Abstract: A humidity sensitive device comprises a base body of a preferably porous semiconductive ceramic having a grain boundary. A high resistance layer is formed in the grain boundary of the semiconductive ceramic and exhibits a humidity sensitive characteristic. First and second electrodes for withdrawing an electrical signal are formed spaced from each other on at least one major surface of the semiconductive ceramic base.
    Type: Grant
    Filed: September 8, 1980
    Date of Patent: May 4, 1982
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Michihiro Murata, Shinsei Okabe
  • Humidity sensitive device
    Patent number: 4263576
    Abstract: A humidity sensitive device, including opposing electrodes formed on an insulating substrate, and a humidity sensitive film formed on the surface of the insulating substrate and at least between the opposing electrodes. The humidity sensitive film is obtained by coating on the surface of the insulating substrate a uniformly dispersed mixture including zirconium oxychloride and epoxy resin and heating the same.
    Type: Grant
    Filed: June 27, 1979
    Date of Patent: April 21, 1981
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Michihiro Murata, Shinsei Okabe
  • Preparation of titanates
    Patent number: 4061583
    Abstract: A process for the preparation of a titanate which comprises adding an aqueous solution containing ions of titanium and at least one metal selected from the group consisting of Ba, Ca, Sr, Zn, Cd and Pb to an aqueous alkaline solution containing hydrogen peroxide, recovering the resulting precipitate and heating the precipitate at a temperature not lower than 100.degree. C to give the titanate of the metal as used in uniformly fine particles. The resulting titanate can be used as ceramic materials for electronic elements.
    Type: Grant
    Filed: April 26, 1976
    Date of Patent: December 6, 1977
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Michihiro Murata, Akihiro Kitao