Patents by Inventor Michio Hanai

Michio Hanai 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).

  • Patent number: 4675055
    Abstract: A method for producing Ti alloy plates, comprising heating an .alpha.+.beta. Ti alloy ingot to a temperature within the .alpha.+.beta. two phase range, forging or rolling said heated alloy ingot to reduce it more than 30% whereby strain energy accumulates in said ingot as it is being reduced, and reheating said reduced ingot containing said accumulated strain energy to a temperature of the .alpha.+.beta. phase range and then hot rolling said reheated reduced ingot so that it is further reduced in an amount more than an additional 30% whereby said accumulated strain energy accelerates recrystallization during said hot rolling to produce a uniform alloy structure, said heating and reheating being carried out in an atmosphere having not more than 0.02 atm oxygen partial pressure.
    Type: Grant
    Filed: May 1, 1985
    Date of Patent: June 23, 1987
    Assignees: Nippon Kokan Kabushiki Kaisha, Nippon Mining Co., Ltd.
    Inventors: Chiaki Ouchi, Hiroyoshi Suenaga, Hideo Sakuyama, Michio Hanai, Ichiroh Sawamura