Patents by Inventor Tohru Zuzuki

Tohru Zuzuki 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).

  • Piezoelectric Oriented Ceramics and Method of Manufacturing the Same
    Publication number: 20140271447
    Abstract: Piezoelectric oriented ceramics containing a Pb(Ti, Zr)O3-based compound having a high degree of orientation not lower than 0.64, which was calculated with the Lotgering method based on an X-ray diffraction pattern in a prescribed cross-section thereof, and having a sintered density not lower than 85% of a theoretical density.
    Type: Application
    Filed: May 30, 2014
    Publication date: September 18, 2014
    Applicants: MURATA MANUFACTURING CO., LTD., National Institute for Materials Science
    Inventors: Yasunari Miwa, Shinichiro Kawada, Masahiko Kimura, Tohru Zuzuki, Tetsuo Uchikoshi, Yoshio Sakka
  • Semiconductive devices utilizing MgTe, MgSe, ZnSe, ZnTe and alloys thereof
    Patent number: 5379313
    Abstract: An injection laser for operation in the yellow to violet portion of optical spectrum utilizes an indium phosphide substrate on which are lattice matched three successive layers each of the form (MgSe).sub.x (ZnSeTe).sub.1-x, where x has a positive value for each layer up to 1 in the first and third layers but in the second layer has a value less than that of either the first or third layer and the first and third layers are doped to be of opposite conductivity type.
    Type: Grant
    Filed: August 31, 1993
    Date of Patent: January 3, 1995
    Assignees: NEC Research Institute, Inc., NEC Corporation
    Inventors: James D. Chadi, Tohru Zuzuki