Patents by Inventor Mikiya Arai

Mikiya Arai 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).

  • Ni-based single crystal super alloy
    Publication number: 20030075247
    Abstract: The object of the present invention is to provide an Ni-based single crystal super alloy capable of improving strength by preventing precipitation of a TCP phase at high temperatures. This object is achieved by an Ni-based single crystal super alloy having a composition consisting of 5.0-7.0 wt % Al, 4.0-8.0 wt % Ta, 2.9-4.5 wt % Mo, 4.0-8.0 wt % W, 3.0-6.0 wt % Re, 0.01-0.50 wt % Hf, 2.0-5.0 wt % Cr, 0.1-15.0 wt % Co and 1.0-4.0 wt % Ru in terms of its weight ratio, with the remainder consisting of Ni and unavoidable impurities.
    Type: Application
    Filed: May 30, 2002
    Publication date: April 24, 2003
    Inventors: Yutaka Koizumi, Toshiharu Kobayashi, Tadaharu Yokokawa, Hiroshi Harada, Yasuhiro Aoki, Mikiya Arai, Shoju Masaki, Ryoji Kakiuchi, Kazuyoshi Chikugo
  • Condenser microphone having resistance against high-temperature and radioactive rays
    Patent number: 4648480
    Abstract: A condenser microphone utilizable at high temperature and intense radioactive rays. The microphone has a tension ring and a backplate, both of which are made of a metal having a small coefficient of linear expansion relative to the other parts of the microphone. The tension ring is fitted to a tension ring holder, and the backplate is mounted on the tension ring holder through an insulating material so that the tension ring and the backplate are held together to form a unitary structure.
    Type: Grant
    Filed: August 16, 1985
    Date of Patent: March 10, 1987
    Assignee: Doryokuro Kakunenryo Kaihatsu Jigyodan
    Inventors: Kenshu Watanabe, Kiminori Shiba, Mikiya Arai, Masaya Yamaguchi, Yasuo Fujiki, Ryohei Fujimoto