Patents by Inventor Kouichirou Sakata

Kouichirou Sakata 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).

  • Pyroelectric ceramic composition and multilayered structure therefrom
    Patent number: 5032471
    Abstract: A pyroelectric ceramic composition of the general formula: PbZr.sub.X (Zn.sub.1/3 Nb.sub.2/3).sub.Y Ti.sub.Z O.sub.3 wherein X+Y+Z=1 is provided having both of high pyroelectric constant and the second transition temperature below its Curie's temperature. Further, there is provided a multilayered pyroelectric structure comprising a stack of a plurality of layers, each of which has the different composition each to other, of the general formula: PbZr.sub.X (Zn.sub.1/3 Nb.sub.2/3).sub.Y Ti.sub.Z O.sub.3 wherein X+Y+Z=1, where the value of Z is different from each other in the different layers.
    Type: Grant
    Filed: July 12, 1990
    Date of Patent: July 16, 1991
    Assignee: Mitsubishi Mining and Cement Co. Ltd.
    Inventors: Kouichirou Sakata, Tadashi Takenaka, Tamotsu Ueyama, Mikiya Ono