Patents by Inventor Shuichi Komatsu

Shuichi Komatsu 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 estimating the residual life of heat resistant parts made of 12% Cr steele
    Patent number: 4321821
    Abstract: Disclosed is a method of measuring the deterioration degree of heat resistant parts made of a 12% Cr steel containing at least one of Mo and W and used under high temperatures on the basis of the amount of Laves phase precipitated within said 12% Cr steel.
    Type: Grant
    Filed: January 3, 1980
    Date of Patent: March 30, 1982
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Shuichi Komatsu, Masako Nakahashi, Hiromitsu Takeda, Masayuki Yamada
  • Method of determining the deterioration of heat-resistant ferritic steel parts
    Patent number: 4287417
    Abstract: A method of determining the degree of deterioration of a heat-resistant ferritic steel part, such as that of Cr-Mo-V steel practically applied in a region of high temperature from at least one of the crystallization factors such as the particle size, interparticle distance and crystallization density of a carbide, particularly V.sub.4 C.sub.3 crystallized out in said ferritic steel part.
    Type: Grant
    Filed: January 28, 1980
    Date of Patent: September 1, 1981
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Shuichi Komatsu, Shinichi Nakamura, Kazumi Shimotori, Yoshio Nakayama
  • Watch case
    Patent number: 4155782
    Abstract: A watch case made of an alloy consisting essentially of 30 to 45% by weight of Cr, 2.5 to 5.0% by weight of Al and the balance essentially Ni, said alloy having been subjected to an aging treatment. The watch case is high in hardness and corrosion resistance and presents a good mirror-like surface.
    Type: Grant
    Filed: November 9, 1976
    Date of Patent: May 22, 1979
    Assignee: Tokyo Shibaura Electric Co., Ltd.
    Inventors: Kazumi Shimotori, Itaru Watanabe, Masako Nakahashi, Shuichi Komatsu