Patents by Inventor Susumu Okuno

Susumu Okuno 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: 11292065
    Abstract: A cutting tool comprises a substrate and an AlTiN layer, the AlTiN layer including a first major surface and a second major surface, the AlTiN layer including a first region having a distance of 0 nm or more and 30 nm or less from the first major surface and having a maximum oxygen content ratio of more than 0 atomic % and less than 5 atomic %, a second region having a distance of more than 30 nm and 100 nm or less from the first major surface and having a maximum oxygen content ratio of 5 atomic % or more and 30 atomic % or less, and a third region having a distance of more than 100 nm and 150 nm or less from the first major surface and having a maximum oxygen content ratio of more than 0 atomic % and less than 5 atomic %.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: April 5, 2022
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yasuki Kido, Susumu Okuno, Fumiyoshi Kobayashi
  • Patent number: 11293095
    Abstract: A cutting tool comprises a substrate and an AlTiN layer, the AlTiN layer including a first major surface and a second major surface, the AlTiN layer including a first region having a distance of 0 nm or more and 30 nm or less from the first major surface and having a maximum oxygen content ratio of 30 atomic % or more, a second region having a distance of more than 30 nm and 100 nm or less from the first major surface and having a maximum oxygen content ratio of 5 atomic % or more and less than 30 atomic %, and a third region having a distance exceeding 100 nm from the first major surface and having a maximum oxygen content ratio of less than 5 atomic %.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: April 5, 2022
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yasuki Kido, Susumu Okuno, Fumiyoshi Kobayashi
  • Patent number: 11274366
    Abstract: A surface-coated cutting tool includes a substrate and a coating film that coats the substrate, wherein the coating film includes a hard coating layer constituted of a domain region and a matrix region, the domain region is a region having a plurality of portions divided and distributed in the matrix region, the domain region has a structure in which a first layer composed of a first Alx1Ti(1-x1) compound and a second layer composed of a second Alx2Ti(1-x2) compound are layered on each other, the matrix region has a structure in which a third layer composed of a third Alx3Ti(1-x3) compound and a fourth layer composed of a fourth Alx4Ti(1-x4) compound are layered on each other, the first AlTi compound, the second AlTi compound and the fourth AlTi compound have a cubic crystal structure, the third AlTi compound has a hexagonal crystal structure.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: March 15, 2022
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Anongsack Paseuth, Yasuki Kido, Susumu Okuno, Shinya Imamura
  • Patent number: 11273498
    Abstract: A cutting tool includes: a substrate; a hard layer provided on the substrate; and a titanium carbonitride layer provided on the hard layer, wherein a thickness of the titanium carbonitride layer is more than or equal to 2 ?m, a hardness of the titanium carbonitride layer at a room temperature is more than or equal to 35 GPa, and a Young's modulus of the titanium carbonitride layer at the room temperature is more than or equal to 800 GPa.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: March 15, 2022
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yasuki Kido, Susumu Okuno, Fumiyoshi Kobayashi, Masahito Hikiji
  • Patent number: 11253929
    Abstract: A cutting tool comprises a substrate and a coating layer provided on the substrate, the coating layer including a multilayer structure layer composed of a first unit layer and a second unit layer, and a lone layer, the lone layer including cubic TizAl1-zN crystal grains, an atomic ratio z of Ti in the TizAl1-zN being 0.4 or more and less than 0.55, the lone layer having a thickness with an average value of 2.5 nm or more and 10 nm or less, the multilayer structure layer having a thickness with an average value of 10 nm or more and 45 nm or less, one multilayer structure layer and one lone layer forming a repetitive unit having a thickness with an average value of 20 nm to 50 nm, a maximum value of 40 nm to 60 nm, and a minimum value of 10 nm to 30 nm.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: February 22, 2022
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yasuki Kido, Anongsack Paseuth, Susumu Okuno
  • Patent number: 11247277
    Abstract: A cutting tool comprises a substrate and a coating layer provided on the substrate, the coating layer including a multilayer structure layer composed of a first unit layer and a second unit layer, and a lone layer, the lone layer including cubic TizAl1-zN crystal grains, an atomic ratio z of Ti in the TizAl1-zN being 0.5 or more and 0.65 or less, the lone layer having a thickness with an average value of 2.5 nm or more and 10 nm or less, the multilayer structure layer having a thickness with an average value of 10 nm or more and 95 nm or less, one multilayer structure layer and one lone layer forming a repetitive unit having a thickness with an average value of 30 nm to 70 nm, a maximum value of 40 nm to 100 nm, and a minimum value of 20 nm to 40 nm.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: February 15, 2022
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yasuki Kido, Anongsack Paseuth, Susumu Okuno
  • Publication number: 20220040767
    Abstract: A cutting tool comprises a substrate and a coating that coats the substrate, the coating including an ?-alumina layer provided on the substrate, the ?-alumina layer including crystal grains of ?-alumina, the ?-alumina layer including a lower portion and an upper portion, the upper portion being occupied in area at a ratio of 50% or more by crystal grains of ?-alumina having a (006) plane with a normal thereto having a direction within ±15° with respect to a direction of the normal to the second interface, the lower portion being occupied in area at a ratio of 50% or more by crystal grains of ?-alumina having a (006) plane with a normal thereto having a direction within ±15° with respect to the direction of the normal to the second interface, the ?-alumina layer having a thickness of 3 ?m or more and 20 ?m or less.
    Type: Application
    Filed: December 12, 2019
    Publication date: February 10, 2022
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Susumu OKUNO, Shinya IMAMURA, Yuki RIKISO, Yasuki KIDO, Fumiyoshi KOBAYASHI
  • Patent number: 11241745
    Abstract: A cutting tool comprises a substrate and a coating layer provided on the substrate, the coating layer including a multilayer structure layer composed of a first unit layer and a second unit layer, and a lone layer, the lone layer including cubic TizAl1-zN crystal grains, an atomic ratio z of Ti in the TizAl1-zN being 0.4 or more and less than 0.55, the lone layer having a thickness with an average value of 2.5 nm or more and 10 nm or less, the multilayer structure layer having a thickness with an average value of 40 nm or more and 95 nm or less, one multilayer structure layer and one lone layer forming a repetitive unit having a thickness with an average value of 50 nm to 100 nm, a maximum value of 90 nm to 110 nm, and a minimum value of 40 nm to 60 nm.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: February 8, 2022
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yasuki Kido, Anongsack Paseuth, Susumu Okuno
  • Patent number: 11241744
    Abstract: A cutting tool comprises a substrate and a coating layer provided on the substrate, the coating layer including a multilayer structure layer composed of a first unit layer and a second unit layer, and a lone layer, the lone layer including cubic TizAl1-zN crystal grains, an atomic ratio z of Ti in the TizAl1-zN being 0.55 or more and 0.7 or less, the lone layer having a thickness with an average value of 2.5 nm or more and 10 nm or less, the multilayer structure layer having a thickness with an average value of 10 nm or more and 45 nm or less, one multilayer structure layer and one lone layer forming a repetitive unit having a thickness with an average value of 20 nm to 50 nm, a maximum value of 40 nm to 60 nm, and a minimum value of 10 nm to 30 nm.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: February 8, 2022
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yasuki Kido, Anongsack Paseuth, Susumu Okuno
  • Publication number: 20220032380
    Abstract: A cutting tool comprises a substrate and a coating that coats the substrate, the coating including an ?-alumina layer provided on the substrate, the ?-alumina layer including crystal grains of ?-alumina, the ?-alumina layer including a lower portion and an upper portion, the upper portion being occupied in area at a ratio of 50% or more by crystal grains of ?-alumina having a (006) plane with a normal thereto having a direction within ±15° with respect to a direction of the normal to the second interface, the lower portion being occupied in area at a ratio of 50% or more by crystal grains of ?-alumina having a (110) plane with a normal thereto having a direction within ±15° with respect to the direction of the normal to the second interface, the ?-alumina layer having a thickness of 3 ?m or more and 20 ?m or less.
    Type: Application
    Filed: December 12, 2019
    Publication date: February 3, 2022
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Susumu OKUNO, Shinya IMAMURA, Yuki RIKISO, Yasuki KIDO, Fumiyoshi KOBAYASHI
  • Patent number: 11220744
    Abstract: A surface-coated cutting tool includes a substrate and a coating film that coats the substrate, wherein the coating film includes a hard coating layer constituted of a domain region and a matrix region, the domain region is a region having a plurality of portions divided and distributed in the matrix region, the domain region has a structure in which a first layer composed of a first Alx1Ti(1-x1) compound and a second layer composed of a second Alx2Ti(1-x2) compound are layered on each other, the matrix region has a structure in which a third layer composed of a third Alx3Ti(1-x3) compound and a fourth layer composed of a fourth Alx4Ti(1-x4) compound are layered on each other, the first AlTi compound, the second AlTi compound and the fourth AlTi compound have a cubic crystal structure, the third AlTi compound has a hexagonal crystal structure.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: January 11, 2022
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Anongsack Paseuth, Yasuki Kido, Susumu Okuno, Shinya Imamura
  • Patent number: 11219952
    Abstract: A surface-coated cutting tool includes a base material and a coating covering the base material. The base material includes a rake face and a flank face. The coating includes a TiCN layer. The TiCN layer has a (422) orientation in a region d1 in the rake face. The TiCN layer has a (311) orientation in a region d2 in the flank face.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: January 11, 2022
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Satoshi Ono, Shinya Imamura, Susumu Okuno, Anongsack Paseuth
  • Publication number: 20220001456
    Abstract: A cutting tool including a rake face, a flank face, and a cutting edge portion, comprising a substrate and an AlTiN layer, the AlTiN layer including cubic AlxTi1-xN crystal grains, Al having an atomic ratio x of 0.7 or more and 0.95 or less, the AlTiN layer including a central portion, the central portion at the rake face being occupied in area by (200) oriented crystal grains at a ratio of 80% or more, the central portion at the flank face being occupied in area by (200) oriented crystal grains at a ratio of 80% or more, the central portion at the cutting edge portion being occupied in area by (200) oriented crystal grains at a ratio of 80% or more.
    Type: Application
    Filed: February 27, 2020
    Publication date: January 6, 2022
    Applicant: Sumitomo Electric Hardmetal Corp.
    Inventors: Yasuki KIDO, Anongsack PASEUTH, Susumu OKUNO, Shinya IMAMURA
  • Patent number: 11213894
    Abstract: A surface-coated cutting tool includes a base material and a coating covering the base material. The base material includes a rake face and a flank face. The coating includes a TiCN layer. The TiCN layer has a (311) orientation in a region d1 in the rake face. The TiCN layer has a (422) orientation in a region d2 in the flank face.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: January 4, 2022
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Satoshi Ono, Shinya Imamura, Susumu Okuno, Anongsack Paseuth
  • Patent number: 11207736
    Abstract: Provided is a cutting tool including a base material and a coating layer provided on the base material, the coating layer including a titanium carbonitride layer provided on the base material, an intermediate layer provided on the titanium carbonitride layer in contact therewith, and an alumina layer provided on the intermediate layer in contact therewith, the intermediate layer being composed of a compound made of titanium, carbon, oxygen, and nitrogen, the intermediate layer having a thickness of more than 1 ?m, when PN1 atomic % represents an atomic ratio of the nitrogen in an interface between the intermediate layer and the alumina layer, and PN2 atomic % represents an atomic ratio of the nitrogen at a point A away from the interface by 1 ?m on a side of the intermediate layer, a ratio PN1/PN2 of the PN1 to the PN2 being more than or equal to 1.03.
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: December 28, 2021
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Susumu Okuno, Yasuki Kido, Fumiyoshi Kobayashi, Anongsack Paseuth
  • Patent number: 11203068
    Abstract: A cutting tool including a rake face, a flank face, and a cutting edge portion, comprising a substrate and an AlTiN layer, the AlTiN layer including cubic AlxTi1-xN crystal grains, A1 having an atomic ratio x of 0.7 or more and less than 0.95, the AlTiN layer including a central portion, the central portion at the rake face being occupied in area by (200) oriented AlxTi1-xN crystal grains at a ratio of 50% or more and less than 80%, the central portion at the cutting edge portion being occupied in area by (200) oriented AlxTi1-xN crystal grains at a ratio of 80% or more.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: December 21, 2021
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yasuki Kido, Anongsack Paseuth, Susumu Okuno, Shinya Imamura
  • Publication number: 20210379671
    Abstract: A cutting tool includes: a substrate; a hard layer provided on the substrate; and a titanium carbonitride layer provided on the hard layer, wherein a thickness of the titanium carbonitride layer is more than or equal to 2 ?m, a hardness of the titanium carbonitride layer at a room temperature is more than or equal to 35 GPa, and a Young's modulus of the titanium carbonitride layer at the room temperature is more than or equal to 800 GPa.
    Type: Application
    Filed: June 4, 2020
    Publication date: December 9, 2021
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yasuki KIDO, Susumu OKUNO, Fumiyoshi KOBAYASHI, Masahito HIKIJI
  • Publication number: 20210371973
    Abstract: A cutting tool comprises a substrate and an AlTiN layer, the AlTiN layer including cubic AlxTi(1-x)N crystal grains, an atomic ratio x of Al in the AlxTi(1-x)N being 0.7 or more and 0.95 or less, the AlTiN layer including a first major surface on a side of a surface of the cutting tool and a second major surface on a side of the substrate, the AlTiN layer including a first region having a distance of 0 nm or more and 100 nm or less from the first major surface, and a second region having a distance of more than 100 nm and 150 nm or less from the first major surface, the first region having a maximum oxygen content ratio of 5 atomic % or more and 30 atomic % or less, the second region having a maximum oxygen content ratio of less than 5 atomic %.
    Type: Application
    Filed: June 2, 2020
    Publication date: December 2, 2021
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yasuki KIDO, Susumu OKUNO, Fumiyoshi KOBAYASHI
  • Publication number: 20210371974
    Abstract: A cutting tool comprises a substrate and an AlTiN layer, the AlTiN layer including a first major surface and a second major surface, the AlTiN layer including a first region having a distance of 0 nm or more and 30 nm or less from the first major surface and having a maximum oxygen content ratio of 30 atomic % or more, a second region having a distance of more than 30 nm and 100 nm or less from the first major surface and having a maximum oxygen content ratio of 5 atomic % or more and less than 30 atomic %, and a third region having a distance exceeding 100 nm from the first major surface and having a maximum oxygen content ratio of less than 5 atomic %.
    Type: Application
    Filed: June 2, 2020
    Publication date: December 2, 2021
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yasuki KIDO, Susumu OKUNO, Fumiyoshi KOBAYASHI
  • Publication number: 20210370410
    Abstract: A cutting tool comprises a substrate and an AlTiN layer, the AlTiN layer including a first major surface and a second major surface, the AlTiN layer including a first region having a distance of 0 nm or more and 30 nm or less from the first major surface and having a maximum oxygen content ratio of more than 0 atomic % and less than 5 atomic %, a second region having a distance of more than 30 nm and 100 nm or less from the first major surface and having a maximum oxygen content ratio of 5 atomic % or more and 30 atomic % or less, and a third region having a distance of more than 100 nm and 150 nm or less from the first major surface and having a maximum oxygen content ratio of more than 0 atomic % and less than 5 atomic %.
    Type: Application
    Filed: June 2, 2020
    Publication date: December 2, 2021
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Yasuki KIDO, Susumu OKUNO, Fumiyoshi KOBAYASHI