Patents by Inventor Koji Kuramochi

Koji Kuramochi 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: 11020804
    Abstract: A surface-coated cutting tool includes a substrate and a coating formed on a surface of the substrate, the coating including one or two or more layers, at least one of the layers being an Al-rich layer including hard particles, the hard particle having a sodium chloride type crystal structure, and including a first unit phase in a form of a plurality of lumps and a second unit phase interposed between the lumps of the first unit phase, the first unit phase being composed of a nitride or carbonitride of AlxTi1-x, the first unit phase having an atomic ratio x of Al of 0.7 or more and 0.96 or less, the second unit phase being composed of a nitride or carbonitride of AlyTi1-y, the second unit phase having an atomic ratio y of Al exceeding 0.5 and less than 0.7.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: June 1, 2021
    Assignees: Sumitomo Electric Hardmetal Corp., Sumitomo Electric Industries, Ltd.
    Inventors: Anongsack Paseuth, Yasuki Kido, Shinya Imamura, Koji Kuramochi
  • Patent number: 10994339
    Abstract: A surface-coated cutting tool includes a substrate composed of cemented carbide and a coating film. The coating film includes an intermediate layer in contact with the substrate and an upper layer formed on the intermediate layer. The upper layer is made up of a single layer consisting of an upper base layer which is a layer in contact with the intermediate layer or multiple layers constituted of two or more layers. A mismatch in lattice interplanar spacing in an interface region between the substrate and the intermediate layer is not higher than 65% of a theoretical value of a mismatch in lattice interplanar spacing between the substrate and the upper base layer. A mismatch in lattice interplanar spacing in an interface region between the intermediate layer and the upper base layer is not higher than 65% of the theoretical value of the mismatch in lattice interplanar spacing between the substrate and the upper base layer.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: May 4, 2021
    Assignees: Sumitomo Electric Hardmetal Corp., Sumitomo Electric Industries, Ltd.
    Inventors: Keizo Tanaka, Makoto Setoyama, Haruyo Fukui, Akira Kobayashi, Koji Kuramochi
  • Publication number: 20200061717
    Abstract: A surface-coated cutting tool includes a substrate and a coating formed on a surface of the substrate, the coating including one or two or more layers, at least one of the layers being an Al-rich layer including hard particles, the hard particle having a sodium chloride type crystal structure, and including a first unit phase in a form of a plurality of lumps and a second unit phase interposed between the lumps of the first unit phase, the first unit phase being composed of a nitride or carbonitride of AlxTi1-x, the first unit phase having an atomic ratio x of Al of 0.7 or more and 0.96 or less, the second unit phase being composed of a nitride or carbonitride of AlyTi1-y, the second unit phase having an atomic ratio y of Al exceeding 0.5 and less than 0.7.
    Type: Application
    Filed: July 7, 2017
    Publication date: February 27, 2020
    Applicants: Sumitomo Electric Hardmetal Corp., Sumitomo Electric Industries, Ltd.
    Inventors: Anongsack PASEUTH, Yasuki KIDO, Shinya IMAMURA, Koji KURAMOCHI
  • Publication number: 20200061718
    Abstract: A surface-coated cutting tool includes a substrate and a coating formed on a surface of the substrate, the coating including one or two or more layers, at least one of the layers being an Al-rich layer including hard particles, the hard particle having a sodium chloride type crystal structure, and including a first unit phase in a form of a plurality of lumps and a second unit phase interposed between the lumps of the first unit phase, the first unit phase being composed of a nitride or carbonitride of AlxTi1?x, the first unit phase having an atomic ratio x of Al of 0.7 or more and 0.96 or less, the second unit phase being composed of a nitride or carbonitride of AlyTi1?y, the second unit phase having an atomic ratio y of Al exceeding 0.5 and less than 0.7.
    Type: Application
    Filed: July 7, 2017
    Publication date: February 27, 2020
    Applicants: Sumitomo Electric Hardmetal Corp., Sumitomo Electric Industries, Ltd.
    Inventors: Anongsack PASEUTH, Yasuki KIDO, Shinya IMAMURA, Koji KURAMOCHI
  • Publication number: 20200061716
    Abstract: A surface-coated cutting tool includes a substrate and a coating formed on a surface of the substrate, the coating including one or two or more layers, at least one of the layers being an Al-rich layer including hard particles, the hard particle having a sodium chloride type crystal structure, and including a first unit phase in a form of a plurality of lumps and a second unit phase interposed between the lumps of the first unit phase, the first unit phase being composed of a nitride or carbonitride of AlxTi1-x, the first unit phase having an atomic ratio x of Al of 0.7 or more and 0.96 or less, the second unit phase being composed of a nitride or carbonitride of AlyTi1-y, the second unit phase having an atomic ratio y of Al exceeding 0.5 and less than 0.7.
    Type: Application
    Filed: July 11, 2017
    Publication date: February 27, 2020
    Applicants: Sumitomo Electric Hardmetal Corp., Sumitomo Electric Industries, Ltd.
    Inventors: Anongsack PASEUTH, Yasuki KIDO, Shinya IMAMURA, Koji KURAMOCHI
  • Publication number: 20190022763
    Abstract: A surface-coated cutting tool includes a substrate composed of cemented carbide and a coating film. The coating film includes an intermediate layer in contact with the substrate and an upper layer formed on the intermediate layer. The upper layer is made up of a single layer consisting of an upper base layer which is a layer in contact with the intermediate layer or multiple layers constituted of two or more layers. A mismatch in lattice interplanar spacing in an interface region between the substrate and the intermediate layer is not higher than 65% of a theoretical value of a mismatch in lattice interplanar spacing between the substrate and the upper base layer. A mismatch in lattice interplanar spacing in an interface region between the intermediate layer and the upper base layer is not higher than 65% of the theoretical value of the mismatch in lattice interplanar spacing between the substrate and the upper base layer.
    Type: Application
    Filed: November 22, 2017
    Publication date: January 24, 2019
    Inventors: Keizo Tanaka, Makoto Setoyama, Haruyo Fukui, Akira Kobayashi, Koji Kuramochi