Patents Assigned to Kimura Chuosho Co., Ltd.
  • Transformable metal surface hardening method
    Patent number: 8286455
    Abstract: A method of metal surface hardening treatment inducing transformation, in which transformation is induced in a surface interior of material as hardening treatment object by simple, rapid treatment utilizing a frictional heat under pressure without the occurrence of melt loss, quench crack, soft spot, deformation, etc. to thereby reform the structure of surface interior of material as hardening treatment object into a miniaturized martensitic structure.
    Type: Grant
    Filed: January 15, 2007
    Date of Patent: October 16, 2012
    Assignees: Osaka University, Kimura Chuosho Co., Ltd.
    Inventors: Hidetoshi Fujii, Yasufumi Yamaguchi, Toshitake Kanno, Yoya Fukuda