Patents by Inventor Hideo Machi

Hideo Machi 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).

  • Wear resistant and heat resistant alloy steels
    Patent number: 3990892
    Abstract: The alloy steel consists (by weight) of C 0.8-1.2%, Si 1.0-2.5%, Mn 0.2-1.0%, Cr 15.0-25.0%, one or both Ni 0.5-3.5% and Co 0.3-5.0%, where both Ni and Co are used, the sum of Ni and Co being 1.0-5.0%, one or both of Mo 0.3-3.5% and W 0.5-3.5%, when both Mo and W are used, the sum of Mo and W being 0.5-3.5% and the balance of Fe and inpurities. Where one, two or more of less than 0.5% of Al, less than 1.0% of Cu, less than 0.5% of V, less than 1.0% of Nb, less than 0.3% Ti, less than 0.25% of Zr, less than 0.2% of B and less than 0.3% of N are contained, the wear resistant and heat resistant property of the alloy can be improved further.
    Type: Grant
    Filed: January 17, 1975
    Date of Patent: November 9, 1976
    Assignees: Kabushiki Kaisha Fujikoshi, Fuji Valve Kabushiki Kaisha
    Inventors: Hideo Machi, Jiichi Kitano, Michio Hamamoto, Yasushi Koyanagi, Hiroshi Hirayama