Patents by Inventor Kazuo Yamagata

Kazuo Yamagata 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: 9777367
    Abstract: A surface coated member having improved stability and a longer service life is provided. The surface coated member of the present invention includes a base member and a hard coating formed on a surface thereof. The hard coating is constituted of one or more layers. At least one of the layers is formed by a CVD method and includes a multilayer structure having a first unit layer and a second unit layer being layered alternately. The first unit layer includes a first compound containing Ti and one or more kind of element selected from the group consisting of B, C, N, and O. The second unit layer includes a second compound containing Al and one or more kind of element selected from the group consisting of B, C, N, and O.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: October 3, 2017
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Anongsack Paseuth, Kazuo Yamagata, Susumu Okuno, Hideaki Kanaoka, Hiroyuki Morimoto, Minoru Itoh
  • Publication number: 20150345012
    Abstract: A surface coated member having improved stability and a longer service life is provided. The surface coated member of the present invention includes a base member and a hard coating formed on a surface thereof. The hard coating is constituted of one or more layers. At least one of the layers is formed by a CVD method and includes a multilayer structure having a first unit layer and a second unit layer being layered alternately. The first unit layer includes a first compound containing Ti and one or more kind of element selected from the group consisting of B, C, N, and O. The second unit layer includes a second compound containing Al and one or more kind of element selected from the group consisting of B, C, N, and O.
    Type: Application
    Filed: November 1, 2013
    Publication date: December 3, 2015
    Inventors: Anongsack PASEUTH, Kazuo YAMAGATA, Susumu OKUNO, Hideaki KANAOKA, Hiroyuki MORIMOTO, Minoru ITOH
  • Publication number: 20150345013
    Abstract: A surface coated member having improved stability and a longer service life is provided. The surface coated member includes a base member and a hard coating formed on a surface thereof. The hard coating is constituted of one or more layers. At least one layer among the layers is a layer including hard particles. The hard particles include a multilayer structure having a first unit layer and a second unit layer being layered alternately. The first unit layer includes a first compound. The second unit layer includes a second compound. The first compound and the second compound are respectively made of one or more kind of element selected from the group consisting of a group 4 element, a group 5 element, a group 6 element of a periodic table, and Al, and one or more kind of element selected from the group consisting of B, C, N, and O.
    Type: Application
    Filed: November 11, 2013
    Publication date: December 3, 2015
    Inventors: Anongsack PASEUTH, Kazuo YAMAGATA, Susumu OKUNO, Hideaki KANAOKA, Hiroyuki MORIMOTO, Minoru ITOH
  • Patent number: 8685531
    Abstract: Provided is a surface-coated cutting tool combining superior heat resistance, superior wear resistance, and superior lubricity with high adhesion between a substrate and a coating. A surface-coated cutting tool of the present invention includes a substrate and a coating formed on the substrate, and the coating is characterized in that the coating is formed by physical vapor deposition and includes one or more layers, that at least one of the one or more layers is a first coating layer, that the first coating layer contains aluminum and nitrogen, has a thermal effusivity of 2,000 to 5,000J·sec?1/2·m?2·K?1, and has a thickness of 0.2 to 5?m, that the first coating layer includes an amorphous region and a crystalline region in order from the substrate side, that the amorphous region is amorphous and has a thickness of 0.01 to 2?m, and that the crystalline region has a crystal structure including a hexagonal structure.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: April 1, 2014
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Sachiko Koike, Shinya Imamura, Kazuo Yamagata
  • Patent number: 8685530
    Abstract: Provided is a surface-coated cutting tool combining superior heat resistance, superior wear resistance, and superior lubricity. A surface-coated cutting tool of the present invention includes a substrate and a coating formed on the substrate, and the coating is characterized in that the coating is formed by physical vapor deposition and includes one or more layers, that at least one of the one or more layers is a first coating layer, and that the first coating layer contains aluminum and nitrogen, has a thermal effusivity of 2,000 to 5,000 J·sec?1/2·m?2·K?1, has a thickness of 0.2 to 5 ?m, and has a crystal structure including a hexagonal structure.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: April 1, 2014
    Assignee: Sumitomo Electric Hardmetal Corp.
    Inventors: Sachiko Koike, Shinya Imamura, Kazuo Yamagata
  • Publication number: 20130209892
    Abstract: Provided is a propylene resin microporous film which has excellent lithium ion permeability, and can be used to fabricate a high-performance lithium ion battery and prevent short circuits between positive and negative electrodes by dendrites. The propylene resin microporous film has micropores formed by uniaxially stretching a propylene resin film, a degree of air permeability of 100 to 400 s/100 mL, and a rate of surface aperture of 30 to 55%.
    Type: Application
    Filed: June 29, 2011
    Publication date: August 15, 2013
    Inventors: Akihiro Ogawa, Takahiko Sawada, Hiroshi Tada, Shotaro Kobaru, Masatoshi Minami, Mitsuo Sasakura, Kazuo Yamagata
  • Publication number: 20120021199
    Abstract: Provided is a surface-coated cutting tool combining superior heat resistance, superior wear resistance, and superior lubricity. A surface-coated cutting tool of the present invention includes a substrate and a coating formed on the substrate, and the coating is characterized in that the coating is formed by physical vapor deposition and includes one or more layers, that at least one of the one or more layers is a first coating layer, and that the first coating layer contains aluminum and nitrogen, has a thermal effusivity of 2,000 to 5,000 J·sec?1/2·m?2·K?1, has a thickness of 0.2 to 5 ?m, and has a crystal structure including a hexagonal structure.
    Type: Application
    Filed: December 3, 2010
    Publication date: January 26, 2012
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.
    Inventors: Sachiko Koike, Shinya Imamura, Kazuo Yamagata
  • Publication number: 20120009403
    Abstract: Provided is a surface-coated cutting tool combining superior heat resistance, superior wear resistance, and superior lubricity with high adhesion between a substrate and a coating. A surface-coated cutting tool of the present invention includes a substrate and a coating formed on the substrate, and the coating is characterized in that the coating is formed by physical vapor deposition and includes one or more layers, that at least one of the one or more layers is a first coating layer, that the first coating layer contains aluminum and nitrogen, has a thermal effusivity of 2,000 to 5,000 J·sec?1·m?1·K?1, and has a thickness of 0.2 to 5 ?m, that the first coating layer includes an amorphous region and a crystalline region in order from the substrate side, that the amorphous region is amorphous and has a thickness of 0.01 to 2 ?m, and that the crystalline region has a crystal structure including a hexagonal structure.
    Type: Application
    Filed: December 3, 2010
    Publication date: January 12, 2012
    Applicant: SUMITOMO ELECTRIC HARDMETAL CORP
    Inventors: Sachiko Koike, Shinya Imamura, Kazuo Yamagata
  • Publication number: 20090178150
    Abstract: The present invention provides a method for generating non-human animals by transferring ES cells to three or four tetraploid embryos to produce chimeric embryos and implanting the chimeric embryos to a psudopregnant non-human animal.
    Type: Application
    Filed: January 5, 2009
    Publication date: July 9, 2009
    Inventors: Hiroshi OHTA, Yuko Sakaide, Kazuo Yamagata, Teruhiko Wakayama
  • Patent number: 7090914
    Abstract: A coated cutting tool with a hard coating layer formed on a substrate. The substrate comprises a binder phase and a hard phase. The coating layer comprises a smooth face having a surface roughness of 0.2 ?m or less substantially at the blade-edge ridge and in a region which extends at least 200 ?m from the rake face side boundary of the ridge toward the rake face side, and extends at least 50 ?m from the flank side boundary of the ridge toward the flank side.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: August 15, 2006
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Kazuo Yamagata, Akihiko Ikegaya
  • Patent number: 7060345
    Abstract: Coating-film furnished coated tools that are lubricative while maintaining resistance to wear are realized by coated tools in which a plurality of coating films is furnished on a base part. Furnished as the coating are one or more layers of, respectively: a first film composed of one compound selected from nitrides, carbides, carbonitrides, oxynitrides and carboxynitrides of TiSi; and a second film composed of one compound selected from nitrides, carbides, carbonitrides, oxynitrides and carboxynitrides of one metal M selected from Ti, Cr, and TiCr. The first film and the second film are laminated in alternation.
    Type: Grant
    Filed: June 17, 2003
    Date of Patent: June 13, 2006
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Haruyo Fukui, Kazuo Yamagata, Keiichi Tsuda, Shinya Imamura
  • Patent number: 6984445
    Abstract: A multi-layer sheet of the present invention comprises a thermoplastic resin foam sheet, a reinforcing sheet layered on integrated with at least one side of the thermoplastic resin foam sheet; the reinforcing sheet being formed by a non-woven fabric which comprises non-meltable fibers which are interwound with one another and which are bound together with a thermoplastic resin, the thermoplastic resin foam sheet having an aspect ratio Dz/Dxy of bubbles of 1.2 or more, and an expansion ratio of 5˜50 cc/g, and therefore the sheet is excellent in bending strength, compressive strength, thermo-forming property and dimensional stability as well as lightweight property, and so can ideally be used for an upholstery material for vehicles, a heat-insulation material, a buffer material and the like.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: January 10, 2006
    Assignee: Sekisui Kagaku Kogyo Kabushiki Kaisha
    Inventors: Kazuo Yamagata, Isao Higuchi, Takamasa Fukuoka, Michitaka Tsujimoto, Masashi Okabe, Yoshihiro Inui
  • Publication number: 20050220546
    Abstract: A coated cutting tool with a hard coating layer formed on a substrate. The substrate comprises a binder phase and a hard phase. The coating layer comprises a smooth face having a surface roughness of 0.2 ?m or less substantially at the blade-edge ridge and in a region which extends at least 200 ?m from the rake face side boundary of the ridge toward the rake face side, and extends at least 50 ?m from the flank side boundary of the ridge toward the flank side.
    Type: Application
    Filed: May 27, 2005
    Publication date: October 6, 2005
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Kazuo Yamagata, Akihiko Ikegaya
  • Publication number: 20040018393
    Abstract: Coating-film furnished coated tools that are lubricative while maintaining resistance to wear are realized by coated tools in which a plurality of coating films is furnished on a base part. Furnished as the coating are one or more layers of, respectively: a first film composed of one compound selected from nitrides, carbides, carbonitrides, oxynitrides and carboxynitrides of TiSi; and a second film composed of one compound selected from nitrides, carbides, carbonitrides, oxynitrides and carboxynitrides of one metal M selected from Ti, Cr, and TiCr. The first film and the second film are laminated in alternation.
    Type: Application
    Filed: June 17, 2003
    Publication date: January 29, 2004
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Haruyo Fukui, Kazuo Yamagata, Keiichi Tsuda, Shinya Imamura
  • Patent number: 6592726
    Abstract: A vacuum arc coating process that can form a hard coating layer excellent in both bonding quality with the substrate and surface roughness, a coating machine for this process, and a revolving cutting tool produced by this process. Vacuum chamber 1 is provided with subchamber 3 that is less evacuatable than coating chamber 2. Arcing-type evaporation source 4 is placed in subchamber 3. A gas such as nitrogen gas is introduced into subchamber 3 from gas-introducing portion 6 when substrate 10 is cleaned before the deposition, so that the gas pressure is kept higher in subchamber 3 than in the vicinity of substrate 10. This condition suppresses the generation of molten particles when the cathode (the evaporating material) of arc evaporation source 4 is melted and ionized, without reducing the sputtering effect. A revolving cutting tool thus obtained has a small magnitude of surface roughness.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: July 15, 2003
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Yasuhisa Hashimoto, Kazuo Yamagata, Akihiko Ikegaya
  • Publication number: 20020187370
    Abstract: The present invention provides a coated cutting tool in which fracture resistance and wear resistance are simultaneously realized, tool life is improved, and surface roughness of machined workpiece is improved
    Type: Application
    Filed: May 8, 2002
    Publication date: December 12, 2002
    Inventors: Kazuo Yamagata, Akihiko Ikegaya
  • Patent number: 6187421
    Abstract: The principal object of the present invention is to provide a coated cemented carbide tool whose both properties of breakage resistance and wear resistance are improved and whose life is lengthened. The present invention has been made to achieve this object and is related with a coated cemented carbide cutting tool comprising a substrate consisting of a matrix of WC and a binder phase of an iron group metal and a plurality of coated layers provided on a surface of the substrate, in which (a) an innermost layer, adjacent to the substrate, of the coated layers consists essentially of titanium nitride having a thickness of 0.
    Type: Grant
    Filed: June 28, 1999
    Date of Patent: February 13, 2001
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Hideki Moriguchi, Akihiko Ikegaya, Kazuo Yamagata
  • Patent number: 6077596
    Abstract: In a coated hard tool, a hard coating is formed on a hard base material, wherein the coating includes ten or more sublayers of types A and B stacked alternately. In the sublayer of type A, a plurality of secondary sublayers of different types each having a thickness of 1 to 50 nm are stacked periodically and repeatedly, while the sublayer of type B is formed of a single layer. The sublayers each have a thickness of 100 to 1000 nm. Each sublayer contains at least one compound selected from a nitride, a carbide, a nitrided carbide and an oxide containing at least one element selected from elements of periodic group 4A, elements of periodic group 5A, Al and B.
    Type: Grant
    Filed: June 9, 1998
    Date of Patent: June 20, 2000
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Yasuhisa Hashimoto, Kazuo Yamagata, Nobuyuki Kitagawa
  • Patent number: 5624766
    Abstract: A coated cemented carbide comprising: a substrate comprising a WC-based cemented carbide containing 4 to 10 wt. % of Co as a binder phase; based on a ratio in a mirror-polished texture of a cross section of the cemented carbide, 70% or more of WC crystals as a hard phase being classified into either of a group of fine particles A having a particle size of from 0.1 to 1 .mu.m and a group of coarse particles B having a particle size of from 3 to 10 .mu.m, the area ratio S.sub.A /S.sub.B of the fine particles A to the coarse particles B being in a range of from 0.22 to 0.45; and a coating layer disposed on a surface of the cemented carbide and having a total thickness in a range of from 5 to 100 .mu.m. The coating layer comprises at least one layer comprising at least one selected from the group consisting of: carbides, nitrides, carbonitrides, oxycarbides, and boronitrides of Ti, Zr, and/or Hf; and at least one layer comprising at least one selected from the group consisting of: Al.sub.2 O.sub.
    Type: Grant
    Filed: March 13, 1995
    Date of Patent: April 29, 1997
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Hideki Moriguchi, Nobuyuki Kitagawa, Toshio Nomura, Mitsunori Kobayashi, Katsuya Uchino, Kazuo Yamagata
  • Patent number: 5503912
    Abstract: A coating film which can sufficiently improve the wear resistance of a cutting tool or a wear-resistant tool and which reveals excellent qualities as a wear-resistant or protective film for an electric or electronic part or a sliding or machine part. Such a coating film is in the form of an ultra-thin film laminate comprising at least one nitride or carbonitride of at least one element selected from the group consisting of the elements in the groups IVa, Va and VIa in the periodic table and Al and B and having a cubic crystal structure and having mainly metallic bonding properties, and at least one compound having a crystal structure other than the cubic crystal structure at normal temperature and normal pressure and under equilibrium state and having mainly covalent bonding properties, the at least one nitride or carbonitride and the compound being alternately laminated in the form of layers, each layer of the compound having a thickness of 0.
    Type: Grant
    Filed: October 12, 1993
    Date of Patent: April 2, 1996
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Makoto Setoyama, Motoyuki Tanaka, Akira Nakayama, Takashi Yoshioka, Yasuhisa Hashimoto, Kazuo Yamagata, Mitsunori Kobayashi