Patents by Inventor Youhei SAWAMURA

Youhei SAWAMURA 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).

  • Iron-based sintered alloy and method for producing the same
    Patent number: 11891682
    Abstract: An iron-based sintered alloy, which has a composition including, in terms of percent by mass, Ti: 18.4 to 24.6%, Mo: 2.8 to 6.6%, C: 4.7 to 7.0%, Cr: 7.5 to 10.0%, Ni: 4.5 to 6.5%, Co: 1.5 to 4.5%, Al: 0.6 to 1.0%, the balance being Fe and unavoidable impurities, wherein the alloy has a structure in which hard particles are dispersed in an island form in a matrix, among other characteristics.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: February 6, 2024
    Assignee: THE JAPAN STEEL WORKS, LTD.
    Inventors: Yusuke Watanabe, Kakeru Kusada, Tetsuo Makida, Youhei Sawamura
  • IRON-BASED SINTERED ALLOY AND METHOD FOR PRODUCING THE SAME
    Publication number: 20200332403
    Abstract: An iron-based sintered alloy, which has a composition including, in terms of percent by mass, Ti: 18.4 to 24.6%, Mo: 2.8 to 6.6%, C: 4.7 to 7.0%, Cr: 7.5 to 10.0%, Ni: 4.5 to 6.5%, Co: 1.5 to 4.5%, Al: 0.6 to 1.0%, the balance being Fe and unavoidable impurities, wherein the alloy has a structure in which hard particles are dispersed in an island form in a matrix, among other characteristics.
    Type: Application
    Filed: July 7, 2020
    Publication date: October 22, 2020
    Applicant: THE JAPAN STEEL WORKS, LTD.
    Inventors: Yusuke WATANABE, Kakeru KUSADA, Tetsuo MAKIDA, Youhei SAWAMURA
  • Iron-based sintered alloy and method for producing the same
    Patent number: 10745786
    Abstract: A method for producing an iron-based sintered alloy, which is used in sliding components in pairs and has a composition including, in terms of percent by mass, Ti: 18.4 to 24.6%, Mo: 2.8 to 6.6%, C: 4.7 to 7.0%, Cr: 7.5 to 10.0%, Ni: 4.5 to 6.5%, Co: 1.5 to 4.5%, Al: 0.6 to 1.0%, the balance being Fe and unavoidable impurities, wherein the method is carried out such that the alloy has a structure in which hard particles are dispersed in an island form in a matrix and, while an area ratio thereof is kept constant, a maximum circle equivalent diameter thereof is controlled to a predetermined value of 40 to 10 ?m.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: August 18, 2020
    Assignee: THE JAPAN STEEL WORKS, LTD.
    Inventors: Yusuke Watanabe, Kakeru Kusada, Tetsuo Makida, Youhei Sawamura
  • IRON-BASED SINTERED ALLOY AND METHOD FOR PRODUCING THE SAME
    Publication number: 20160376687
    Abstract: A method for producing an iron-based sintered alloy, which is used in sliding components in pairs and has a composition including, in terms of percent by mass, Ti: 18.4 to 24.6%, Mo: 2.8 to 6.6%, C: 4.7 to 7.0%, Cr: 7.5 to 10.0%, Ni: 4.5 to 6.5%, Co: 1.5 to 4.5%, Al: 0.6 to 1.0%, the balance being Fe and unavoidable impurities, wherein the method is carried out such that the alloy has a structure in which hard particles are dispersed in an island form in a matrix and, while an area ratio thereof is kept constant, a maximum circle equivalent diameter thereof is controlled to a predetermined value of 40 to 10 ?m.
    Type: Application
    Filed: June 23, 2016
    Publication date: December 29, 2016
    Applicant: THE JAPAN STEEL WORKS, LTD.
    Inventors: Yusuke WATANABE, Kakeru KUSADA, Tetsuo MAKIDA, Youhei SAWAMURA