Patents by Inventor Ryota Honda

Ryota Honda 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).

  • Centrifugally cast composit roll
    Patent number: 8308622
    Abstract: A centrifugally cast composite roll comprising an outer layer having a composition comprising by mass 2.5-9% of C, 0.1-3.5% of Si, 0.1-3.5% of Mn, and 11-40% of V, the balance being Fe and inevitable impurities; an intermediate layer made of a high-speed steel alloy, which is formed inside the outer layer; and an inner layer made of cast iron or steel, which is formed inside the intermediate layer.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: November 13, 2012
    Assignee: Hitachi Metals, Ltd.
    Inventors: Kiyoshi Furushima, Shunji Matsumoto, Ryota Honda, Kiyoshi Hayashi, Takashi Honda, Masatsugu Uchida, Seiji Oyama, Takuya Osue
  • Centrifugally cast external layer for rolling roll and method for manufacture thereof
    Patent number: 8156651
    Abstract: A method for producing an outer layer for a roll having a structure having MC carbide dispersed at an area ratio of 20-60%, comprising the steps of (1) centrifugally casting a melt having a composition comprising, by mass, 2.2-6.0% of C, 0.1-3.5% of Si, 0.1-3.5% of Mn, and 8-22% of V, the balance being Fe and inevitable impurity elements, to produce a cylindrical body comprising an inner layer having concentration MC carbide, an MC-carbide-poor outer layer, and a concentration gradient layer between the inner layer and the outer layer, in which the area ratio of MC carbide changes, and (2) cutting the cylindrical body to a depth at which the area ratio of MC carbide is 20% or more.
    Type: Grant
    Filed: September 13, 2005
    Date of Patent: April 17, 2012
    Assignee: Hitachi Metals, Ltd.
    Inventors: Kiyoshi Furushima, Shunji Matsumoto, Ryota Honda, Kiyoshi Hayashi, Takashi Honda, Masatsugu Uchida
  • CENTRIFUGALLY CAST COMPOSIT ROLL
    Publication number: 20090092852
    Abstract: A centrifugally cast composite roll comprising an outer layer having a composition comprising by mass 2.5-9% of C, 0.1-3.5% of Si, 0.1-3.5% of Mn, and 11-40% of V, the balance being Fe and inevitable impurities; an intermediate layer made of a high-speed steel alloy, which is formed inside the outer layer; and an inner layer made of cast iron or steel, which is formed inside the intermediate layer.
    Type: Application
    Filed: March 13, 2006
    Publication date: April 9, 2009
    Applicant: Hitachi Metals, Ltd.
    Inventors: Kiyoshi Furushima, Shunji Matsumoto, Ryota Honda, Kiyoshi Hayashi, Takashi Honda, Masatsugu Uchida, Seiji Oyama, Takuya Osue
  • Centrifugally Cast External Layer for Rolling Roll and Method for Manufacture Thereof
    Publication number: 20080226936
    Abstract: A method for producing an outer layer for a roll having a structure having MC carbide dispersed at an area ratio of 20-60%, comprising the steps of (1) centrifugally casting a melt having a composition comprising, by mass, 2.2-6.0% of C, 0.1-3.5% of Si, 0.1-3.5% of Mn, and 8-22% of V, the balance being Fe and inevitable impurity elements, to produce a cylindrical body comprising an inner layer having concentration MC carbide, an MC-carbide-poor outer layer, and a concentration gradient layer between the inner layer and the outer layer, in which the area ratio of MC carbide changes, and (2) cutting the cylindrical body to a depth at which the area ratio of MC carbide is 20% or more.
    Type: Application
    Filed: September 13, 2002
    Publication date: September 18, 2008
    Applicant: Hitachi Metals, Ltd.
    Inventors: Kiyoshi Furushima, Shunji Matsumoto, Ryota Honda, Kiyoshi Hayashi, Takashi Honda, Masatsugu Uchida