Patents by Inventor Yusuke Shioya

Yusuke Shioya 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).

  • Permanent magnet including multiple ferromagnetic phases and method for producing the magnet
    Patent number: 7297213
    Abstract: An iron-based rare earth alloy magnet has a composition represented by the general formula: (Fe1-mTm)100-x-y-zQxRyMz, where T is at least one element selected from the group consisting of Co and Ni; Q is at least one element selected from the group consisting of B and C; R is at least one rare earth element substantially excluding La and Ce; and M is at least one metal element selected from the group consisting of Ti, Zr and Hf and always includes Ti. In this formula, the mole fractions x, y, z and m meet the inequalities of: 10 at %<x?20 at %; 6 at %?y<10 at %; 0.1 at %?z?12 at %; and 0?m?0.5, respectively.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: November 20, 2007
    Assignee: Neomax Co., Ltd.
    Inventors: Hirokazu Kanekiyo, Toshio Miyoshi, Satoshi Hirosawa, Yasutaka Shigemoto, Yusuke Shioya
  • Permanent magnet including multiple ferromagnetic phases and method for producing the magnet
    Publication number: 20040134567
    Abstract: An iron-based rare earth alloy magnet has a composition represented by the general formula: (Fe1-mTm)100-x-y-zQxRyMz, where T is at least one element selected from the group consisting of Co and Ni; Q is at least one element selected from the group consisting of B and C; R is at least one rare earth element substantially excluding La and Ce; and M is at least one metal element selected from the group consisting of Ti, Zr and Hf and always includes Ti. In this formula, the mole fractions x, y, z and m meet the inequalities of: 10 at %<x≦20 at %; 6 at %≦y<10 at %; 0.1 at %≦z≦12 at %; and 0≦m≦0.5, respectively.
    Type: Application
    Filed: December 24, 2003
    Publication date: July 15, 2004
    Applicant: Sumitomo Special Metals Co., Ltd.
    Inventors: Hirokazu Kanekiyo, Toshio Miyoshi, Satoshi Hirosawa, Yasutaka Shigemoto, Yusuke Shioya
  • Permanent magnet including multiple ferromagnetic phases and method of producing the magnet
    Patent number: 6706124
    Abstract: An iron-based rare earth alloy magnet has a composition represented by the general formula: (Fe1-mTm)100-x-y-zQxRyMz, where T is at least one element selected from the group consisting of Co and Ni; Q is at least one element selected from the group consisting of B and C; R is at least one rare earth element substantially excluding La and Ce; and M is at least one metal element selected from the group consisting of Ti, Zr and Hf and always includes Ti. In this formula, the mole fractions x, y, z and m meet the inequalities of: 10 at %<x≦20 at %; 6 at %≦y<10 at %; 0.1 at %≦z≦12 at %; and 0≦m≦0.5, respectively.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: March 16, 2004
    Assignee: Sumitomo Special Metals Co., Ltd.
    Inventors: Hirokazu Kanekiyo, Toshio Miyoshi, Satoshi Hirosawa, Yasutaka Shigemoto, Yusuke Shioya
  • Permanent magnet including multiple ferromagnetic phases and method for producing the magnet
    Publication number: 20020017339
    Abstract: An iron-based rare earth alloy magnet has a composition represented by the general formula: (Fe1-mTm)100-x-y-zQxRyMz, where T is at least one element selected from the group consisting of Co and Ni; Q is at least one element selected from the group consisting of B and C; R is at least one rare earth element substantially excluding La and Ce; and M is at least one metal element selected from the group consisting of Ti, Zr and Hf and always includes Ti. In this formula, the mole fractions x, y, z and m meet the inequalities of: 10 at %<x≦20 at %; 6 at %≦y<10 at %; 0.1 at %≦z≦12 at %; and 0≦m≦0.5, respectively.
    Type: Application
    Filed: May 24, 2001
    Publication date: February 14, 2002
    Inventors: Hirokazu Kanekiyo, Toshio Miyoshi, Satoshi Hirosawa, Yasutaka Shigemoto, Yusuke Shioya