Patents by Inventor Keizo Tanaka

Keizo Tanaka 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: 11059105
    Abstract: Provided is a surface-coated cutting tool including a base material and a coating including a super-multilayer-structure layer where A layers and B layers different from the A layers in composition are alternately laminated. The super-multilayer-structure layer includes an X area and a Y area those are alternately repeated. In the X area, A layers having a thickness AX and B layers having a thickness BX are alternately laminated. In the Y area, A layers having a thickness AY and B layers having a thickness BY are alternately laminated. The thickness AX is larger than the thickness AY, and the thickness BX is smaller than the thickness BY. Each of the A layers and the B layers comprising one or more elements selected from a group consisting of Ti, Al, Cr, Si, Ta, Nb, and W, and one or more elements selected from a group consisting of C and N.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: July 13, 2021
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Keizo Tanaka, Makoto Setoyama, Yutaka Kobayashi, Akira Kobayashi
  • Patent number: 11033969
    Abstract: A cutting tool includes a substrate and a coating that coats a surface of the substrate, the coating including a multilayer structure layer composed of at least one layer A and at least one layer B alternately deposited from a side closer to the substrate toward a side closer to a surface, the layer A having an average composition of AlxCr(1-x)N, the layer B being composed of AlyTi(1-y)N, the layer A being composed of a domain region and a matrix region, the domain region having a composition ratio of Cr larger than that of Cr of the matrix region, wherein x has a range of 0.5?x?0.8 and y has a range of 0.5?y?0.7.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: June 15, 2021
    Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Keizo Tanaka, Shinya Imamura, Haruyo Fukui
  • 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: 20210086268
    Abstract: A cutting tool incudes a substrate and a coating that coats a surface of the substrate, the coating including a multilayer structure layer composed of at least one layer A and at least one layer B alternately deposited from a side closer to the substrate toward a side closer to a surface, the layer A having an average composition of AlxCr(1-x)N, the layer B being composed of TiyAlzSi(1-y-z)N, the layer A being composed of a domain region and a matrix region, the domain region having a composition ratio of Cr larger than that of Cr of the matrix region, wherein x has a range of 0.5?x?0.8, y has a range of 0.5?y<0.71, z has a range of 0.29?z<0.5, and 1?y?z has a range of 0<1?y?z?0.1.
    Type: Application
    Filed: June 26, 2019
    Publication date: March 25, 2021
    Applicants: SUMITOMO ELECTRIC HARDMETAL CORP., SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Keizo TANAKA, Shinya IMAMURA, Haruyo FUKUI
  • Publication number: 20210069794
    Abstract: A surface coated cutting tool comprises a base material and a coating layer that coats the base material, the coating layer including an alternate layer composed of a first unit layer and a second unit layer alternately stacked, the first unit layer being composed of a nitride containing aluminum and zirconium, in the first unit layer, when the total number of metal atoms constituting the first unit layer is represented as 1, a ratio thereto of the number of atoms of the zirconium being not less than 0.65 and not more than 0.95, the second unit layer being composed of a nitride containing titanium and aluminum, in the second unit layer, when the total number of metal atoms constituting the second unit layer is represented as 1, a ratio thereto of the number of atoms of the aluminum being larger than 0.40 and not more than 0.70.
    Type: Application
    Filed: October 16, 2018
    Publication date: March 11, 2021
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Haruyo FUKUI, Makoto SETOYAMA, Keizo TANAKA, Kouhei YOSHIMURA
  • Publication number: 20210046561
    Abstract: Provided is a cutting tool including a base material including a flank face and a coating layer that coats the flank face, the coating layer including a matrix region and metal particulates, the matrix region being made of a compound represented by (AlxTiyX1-x-y)CvOwN1-v-w, where X representing at least one element selected from the group consisting of chromium, silicon, niobium, tantalum, tungsten, and boron, the metal particulates containing aluminum or titanium as a constituent element, the metal particulates having particle diameters of more than or equal to 20 nm and less than or equal to 200 nm, a number of the metal particulates being more than or equal to 12 and less than or equal to 36 in a field of view of 3 ?m×4 ?m in a cross section parallel to a direction of a normal to an interface of the coating layer.
    Type: Application
    Filed: February 28, 2020
    Publication date: February 18, 2021
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Keizo TANAKA, Shinya IMAMURA
  • Publication number: 20210046553
    Abstract: Provided is a cutting tool including a base material including a rake face and a coating layer that coats the rake face, the coating layer including a matrix region and metal particulates, the matrix region being made of a compound represented by (AlxTiyX1?x?y)CvOwN1?v?w, where X representing at least one element selected from the group consisting of chromium, silicon, niobium, tantalum, tungsten, and boron, the metal particulates containing aluminum or titanium as a constituent element, the metal particulates having particle diameters of more than or equal to 20 nm and less than or equal to 200 nm, a number of the metal particulates being more than or equal to 12 and less than or equal to 36 in a field of view of 3 ?m×4?m in a cross section parallel to a direction of a normal to an interface of the coating layer.
    Type: Application
    Filed: February 28, 2020
    Publication date: February 18, 2021
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Keizo TANAKA, Shinya IMAMURA
  • Publication number: 20210008634
    Abstract: A cutting tool includes a substrate and a coating that coats a surface of the substrate, the coating including a multilayer structure layer composed of at least one layer A and at least one layer B alternately deposited from a side closer to the substrate toward a side closer to a surface, the layer A having an average composition of AlxCr(1-x)N, the layer B being composed of AlyTi(1-y)N, the layer A being composed of a domain region and a matrix region, the domain region having a composition ratio of Cr larger than that of Cr of the matrix region, wherein x has a range of 0.5?x?0.8 and y has a range of 0.5?y?0.7.
    Type: Application
    Filed: June 26, 2019
    Publication date: January 14, 2021
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Keizo TANAKA, Shinya IMAMURA, Haruyo FUKUI
  • Publication number: 20200406364
    Abstract: A cutting tool includes: a substrate; and a coating film formed on the substrate, wherein the coating film includes a first layer formed on the substrate, and a second layer formed on the first layer, the first layer is composed of a boride including titanium as a component element, and the second layer is composed of a nitride including zirconium as a component element.
    Type: Application
    Filed: July 10, 2019
    Publication date: December 31, 2020
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Haruyo FUKUI, Makoto SETOYAMA, Keizo TANAKA
  • Publication number: 20200406365
    Abstract: A cutting tool includes: a substrate; and a coating film formed on the substrate, wherein the coating film includes a first layer formed on the substrate, and a second layer formed on the first layer, the first layer is composed of a boride including zirconium as a component element, and the second layer is composed of a nitride including zirconium as a component element.
    Type: Application
    Filed: July 10, 2019
    Publication date: December 31, 2020
    Applicants: SUMITOMO ELECTRIC HARDMETAL CORP., SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Haruyo FUKUI, Makoto SETOYAMA, Keizo TANAKA
  • Publication number: 20200368822
    Abstract: A surface coated cutting tool comprises a base material and a coating layer that coats the base material, the coating layer including an alternate layer composed of a first unit layer and a second unit layer alternately stacked, the first unit layer being composed of a nitride containing aluminum and zirconium, in the first unit layer, when the total number of metal atoms constituting the first unit layer is represented as 1, a ratio thereto of the number of atoms of the zirconium being not less than 0.65 and not more than 0.95, the second unit layer being composed of a nitride containing titanium and silicon, in the second unit layer, when the total number of metal atoms constituting the second unit layer is represented as 1, a ratio thereto of the number of atoms of the silicon being larger than 0 and not more than 0.20.
    Type: Application
    Filed: October 30, 2018
    Publication date: November 26, 2020
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Haruyo FUKUI, Makoto SETOYAMA, Keizo TANAKA, Kouhei YOSHIMURA
  • Publication number: 20200331071
    Abstract: A surface-coated cutting tool includes: a substrate including a rake face and a flank face; a first coating film that coats the rake face; and a second coating film that coats the flank face, wherein the first coating film includes a first composite nitride layer at a region d1 on the rake face, the second coating film includes a second composite nitride layer at a region d2 on the flank face, the first composite nitride layer includes Ti1-x1-y1Alx1Tay1C?1N?1, the second composite nitride layer includes Ti1-x2-y2Alx2Tay2C?2N?2.
    Type: Application
    Filed: January 30, 2019
    Publication date: October 22, 2020
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Kouhei YOSHIMURA, Haruyo FUKUI, Makoto SETOYAMA, Keizo TANAKA
  • Patent number: 10786871
    Abstract: A wear-resistant member production method includes: forming a clad layer by moving, relative to a substrate while feeding cladding powder onto the substrate and melting it using a local heating device; and cutting the clad layer. The cladding powder includes matrix powder containing a copper-based alloy, and hard powder including, as a hard phase, a silicide containing one or more elements selected from Cr, Fe, Co, Ni, and Cu, and one or more elements selected from Mo, W, and Nb. The hard powder includes first hard powder and second hard powder. The second hard powder is fed, separately from the first hard powder, to a melt pool formed by melting the first hard powder and the matrix powder, such that at least part of the second hard powder remains unmelted within the clad layer.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: September 29, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keizo Tanaka, Yasuhiro Yamamoto
  • Publication number: 20190286117
    Abstract: Provided are a failure prediction support device, a failure prediction support method, and a failure prediction support program, by which a user can easily know an abnormality in time series data relating to an apparatus. The failure prediction support device includes: a difference detection part, acquiring actual machine time series data being time series data relating to control of an apparatus and simulation time series data being time series data relating to control of the simulated apparatus, and detecting a difference between the actual machine time series data and the simulation time series data; a determination part, determining whether or not the difference satisfies a condition predetermined in relation to an abnormality in the actual machine time series data; and a notification processing part, notifying that the difference has been detected when it is determined that the difference satisfies the condition.
    Type: Application
    Filed: January 18, 2019
    Publication date: September 19, 2019
    Applicant: OMRON Corporation
    Inventors: Keizo TANAKA, Haruna SHIMAKAWA, Katsushige OHNUKI
  • Publication number: 20190247930
    Abstract: Provided is a surface-coated cutting tool including a base material and a coating including a super-multilayer-structure layer where A layers and B layers different from the A layers in composition are alternately laminated. The super-multilayer-structure layer includes an X area and a Y area those are alternately repeated. In the X area, A layers having a thickness AX and B layers having a thickness BX are alternately laminated. In the Y area, A layers having a thickness AY and B layers having a thickness BY are alternately laminated. The thickness AX is larger than the thickness AY, and the thickness BX is smaller than the thickness BY. Each of the A layers and the B layers comprising one or more elements selected from a group consisting of Ti, Al, Cr, Si, Ta, Nb, and W, and one or more elements selected from a group consisting of C and N.
    Type: Application
    Filed: September 20, 2017
    Publication date: August 15, 2019
    Inventors: Keizo Tanaka, Makoto Setoyama, Yutaka Kobayashi, Akira Kobayashi
  • 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
  • Publication number: 20180214993
    Abstract: A wear-resistant member production method includes: forming a clad layer by moving, relative to a substrate while feeding cladding powder onto the substrate and melting it using a local heating device; and cutting the clad layer. The cladding powder includes matrix powder containing a copper-based alloy, and hard powder including, as a hard phase, a silicide containing one or more elements selected from Cr, Fe, Co, Ni, and Cu, and one or more elements selected from Mo, W, and Nb. The hard powder includes first hard powder and second hard powder. The second hard powder is fed, separately from the first hard powder, to a melt pool formed by melting the first hard powder and the matrix powder, such that at least part of the second hard powder remains unmelted within the clad layer.
    Type: Application
    Filed: January 31, 2018
    Publication date: August 2, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keizo TANAKA, Yasuhiro YAMAMOTO
  • Patent number: 9962771
    Abstract: A surface-coated tool includes a substrate and a coating film formed on the substrate. The coating film includes an alternate layer in which one or more A layers and one or more B layers are alternately stacked. The A layer and the B layer each have a thickness not smaller than 2 nm and not greater than 100 nm. An average composition of the A layer is expressed as TiaAlbSicN (0.5<a<0.8, 0.2<b<0.4, 0.01<c<0.1, a+b+c=1), an average composition of the B layer is expressed as TidAleSifN (0.4<d<0.6, 0.3<e<0.7, 0.01<f<0.1, d+e+f=1), and a condition of 0.05<A?D?0.2 AND 0.05<E?B?0.2 is satisfied.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: May 8, 2018
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Keizo Tanaka, Hiroki Takeshita, Kazuhiro Hirose, Haruyo Fukui
  • Publication number: 20160175939
    Abstract: A surface-coated tool includes a substrate and a coating film formed on the substrate. The coating film includes an alternate layer in which one or more A layers and one or more B layers are alternately stacked. The A layer and the B layer each have a thickness not smaller than 2 nm and not greater than 100 nm. An average composition of the A layer is expressed as TiaAlbSicN (0.5<a<0.8, 0.2<b<0.4, 0.01<c<0.1, a+b+c=1), an average composition of the B layer is expressed as TidAleSifN (0.4<d<0.6, 0.3<e<0.7, 0.01<f<0.1, d+e+f=1), and a condition of 0.05<A-D?0.2 AND 0.05<E-B?0.2 is satisfied.
    Type: Application
    Filed: May 19, 2015
    Publication date: June 23, 2016
    Applicants: SUMITOMO ELECTRIC HARDMETAL CORP., SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Keizo Tanaka, Hiroki Takeshita, Kazuhiro Hirose, Haruyo Fukui
  • Publication number: 20100059261
    Abstract: A material for use in flexible printed wiring board having high reliability and allowing for processing fine wiring includes a compound represented by the following general formula (I): wherein one of X and Y represents O and the other represents NAr2R2, and R1, R2, Ar1, and Ar2 are as defined in the specification, and a resin composition comprising the compound as a reactive monomer.
    Type: Application
    Filed: June 20, 2006
    Publication date: March 11, 2010
    Applicants: AMT LABORATORY CO., LTD., MANAC INC.
    Inventors: Hisashi Watanabe, Kenji Nakajima, Keizo Tanaka, Satoru Nanba