Patents Assigned to AT&T Corp.
  • Patent number: 11380602
    Abstract: Provided is a plating film containing Au and Tl, including Tl oxides including Tl2O on a surface of the plating film, a ratio of Tl atoms constituting Tl2O to a total of Tl atoms constituting the Tl oxides and Tl atoms constituting Tl simple substances on the surface being 40% or more.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: July 5, 2022
    Assignees: Sumitomo Electric Industries, Ltd., A.L.M.T. CORP.
    Inventors: Kengo Goto, Akihisa Hosoe, Tadashi Arikawa, Hiroya Sato, Masatoshi Nagashima, Shohei Murakami
  • Publication number: 20220186347
    Abstract: A composite material contains a metallic phase, a non-metallic phase and a specific element. At least 90 mass % of the metallic phase is composed of at least one selected from the group consisting of Ag and Cu. The non-metallic phase includes a coated core material. The coated core material includes a core material and a carbide layer that covers at least a part of a surface of the core material. The core material contains at least one carbon-containing material selected from the group consisting of diamond, graphite, carbon fibers, and silicon carbide. The carbide layer contains a carbide of at least one metal element selected from the group consisting of Ti, Cr, Ta, and V. The specific element is at least one selected from the group consisting of Y and Mg. A total content of the specific element is 0.0004 mass % to 1.3 mass %.
    Type: Application
    Filed: March 13, 2020
    Publication date: June 16, 2022
    Applicants: Sumitomo Electric Industries, Ltd., A.L.M.T. Corp.
    Inventors: Isao IWAYAMA, Ryota MATSUGI, Takahiro NISHIMIZU
  • Publication number: 20220168995
    Abstract: A composite member excellent in corrosion resistance of a substrate and excellent in heat radiation property is provided. A composite member includes a substrate composed of a composite material containing magnesium or a magnesium alloy and SiC and a coating layer provided on a surface of the substrate. The coating layer includes an outermost layer provided as an outermost surface and an intermediate layer provided directly under the outermost layer. The outermost layer contains nickel and phosphorus. The intermediate layer is mainly composed of copper. The intermediate layer has a thickness not smaller than 30 ?m.
    Type: Application
    Filed: March 5, 2020
    Publication date: June 2, 2022
    Applicants: Sumitomo Electric Industries, Ltd., A.L.M.T. Corp.
    Inventors: Kengo GOTO, Tomoaki IKEDA, Akihisa HOSOE, Fukuto ISHIKAWA, Masanori SUGISAWA
  • Patent number: 11312632
    Abstract: Provided is a tungsten carbide powder satisfying such a condition that when the Fsss particle size thereof is represented by a (?m) and the BET particle size thereof converted from the BET specific surface area is represented by b (?m), a is 0.40 ?m or more and 1.50 ?m or less, and b/a is 0.17 or more and 0.35 or less.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: April 26, 2022
    Assignee: A.L.M.T. Corp.
    Inventors: Takehiko Hayashi, Tomoyuki Ishida, Takahiro Yamakawa
  • Patent number: 11293082
    Abstract: A powder containing tungsten carbide has an Fsss particle size of greater than or equal to 0.3 ?m and less than or equal to 1.5 ?m, and a content rate of the tungsten carbide of greater than or equal to 90% by mass. The powder has a crystallite size (average particle diameter) Y satisfying a relational expression of Y?0.1×X+0.20 (X: the Fsss particle size of the power containing tungsten carbide).
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: April 5, 2022
    Assignee: A.L.M.T. Corp.
    Inventors: Takayuki Fudo, Kazuo Sasaya, Takehiko Hayashi
  • Publication number: 20210398877
    Abstract: A heat radiation member excellent in electrical insulation and better in thermal conduction is provided. The heat radiation member includes a substrate composed of a composite material containing diamond and a metallic phase, an insulating plate provided on at least a part of front and rear surfaces of the substrate and composed of an aluminum nitride, and a single bonding layer interposed between the substrate and the insulating plate, the heat radiation member having thermal conductivity not lower than 400 W/m·K.
    Type: Application
    Filed: August 30, 2019
    Publication date: December 23, 2021
    Applicants: Sumitomo Electric Industries, Ltd., A.L.M.T. Corp.
    Inventors: Ryota MATSUGI, Isao IWAYAMA, Chieko TANAKA, Hideaki MORIGAMI
  • Publication number: 20210381782
    Abstract: A composite member having an excellent heat resistance is provided. The composite member includes: a substrate composed of a composite material including a non-metal phase and a metal phase; and a metal layer that covers at least a portion of a surface of the substrate, wherein a metal included in each of the metal phase and the metal layer is mainly composed of Ag, and a ratio of a content of Cu to a total content of Ag and Cu in a boundary region of the metal layer with the substrate is less than or equal to 20 atomic %.
    Type: Application
    Filed: August 30, 2019
    Publication date: December 9, 2021
    Applicants: Sumitomo Electric Industries, Ltd., A.L.M.T. Corp.
    Inventors: Ryota MATSUGI, Isao IWAYAMA, Chieko TANAKA, Hideaki MORIGAMI
  • Patent number: 11147156
    Abstract: A composite member includes a substrate composed of a composite material containing a metal and a non-metal. One surface of the substrate has spherical warpage of which radius of curvature R is not smaller than 5000 mm and not greater than 35000 mm. A sphericity error is not greater than 10.0 ?m, the sphericity error being defined as an average distance between a plurality of measurement points on a contour of a warped portion of the substrate and approximate arcs defined by the plurality of measurement points. The substrate has a thermal conductivity not lower than 150 W/m·K and a coefficient of linear expansion not greater than 10 ppm/K.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: October 12, 2021
    Assignees: Sumitomo Electric Industries, Ltd., AL.M.T. CORP.
    Inventors: Isao Iwayama, Shigeki Koyama, Masashi Okamoto, Yuta Inoue, Hiroyuki Kontani, Takehisa Yamamoto
  • Patent number: 11123841
    Abstract: A super-abrasive grinding wheel includes a core and a super-abrasive grain layer provided on a surface of the core, the super-abrasive grain layer including diamond abrasive grains and CBN abrasive grains, the diamond abrasive grains and the CBN abrasive grains being fixed to the core in a single layer by a binder. The diamond abrasive grains and the CBN abrasive grains have projecting tips acting on a workpiece, the projecting tips having a variation in height of 10 ?m or less, the diamond abrasive grains having their projecting tips with irregularities of 0.1 ?m or more in height.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: September 21, 2021
    Assignee: A.L.M.T. Corp.
    Inventor: Nobuhide Nakamura
  • Publication number: 20210245276
    Abstract: A reamer incudes a core and a plurality of outer-circumference cutting edges provided on an outer circumference of the core and made of a hard tool material. The core extends from a front end to a rear end. The core is provided with a plurality of flutes from the front end to the rear end. A center-of-gravity adjustment portion, which adjusts a distance from a center of rotation to a center of gravity, is provided at least partially from terminal ends of the plurality of flutes on a rear end side to the rear end of the core. The center-of-gravity adjustment portion causes the deviation of the center of gravity from the center of rotation to be smaller than when no center-of-gravity adjustment portion is provided.
    Type: Application
    Filed: April 3, 2019
    Publication date: August 12, 2021
    Applicant: A.L.M.T. Corp.
    Inventors: Sakuya TANAKA, Koji SAWA
  • Publication number: 20210245277
    Abstract: A reamer includes a core, a plurality of outer-circumference cutting edges provided on an outer circumference of the core and made of a hard tool material, and a margin provided on a rear side of each the plurality of outer-circumference cutting edges in a rotational direction. A distance from an axis of rotation to a position of a center of gravity of the reamer is greater than 0.01 mm and not greater than 0.5 mm.
    Type: Application
    Filed: April 3, 2019
    Publication date: August 12, 2021
    Applicant: A.L.M.T. Corp.
    Inventors: Sakuya TANAKA, Koji SAWA
  • Publication number: 20210237227
    Abstract: A polycrystalline abrasive grain includes: a plurality of cBN particles; and a binder that binds the plurality of cBN particles, wherein the binder includes at least one of nitride, carbide, and carbonitride of one selected from a group consisting of a group 4a metal, a group 5a metal, and a group 6a metal in a periodic table, and a content of the binder in the polycrystalline abrasive grain is more than or equal to 5 volume % and less than or equal to 50 volume %.
    Type: Application
    Filed: April 24, 2019
    Publication date: August 5, 2021
    Applicants: Sumitomo Electric Industries, Ltd., SUMITOMO ELECTRIC HARDMETAL CORP., A.L.M.T. Corp.
    Inventors: Takashi HARADA, Katsumi OKAMURA, Akito ISHII, Satoru KUKINO, Nobuhide NAKAMURA, Tomokazu NAKAMURA
  • Patent number: 11072008
    Abstract: A wear-resistant tool includes composite polycrystalline diamond as a core, the composite polycrystalline diamond being composed of polycrystalline diamond in which particulate diamond is directly bonded and non diamond carbon. The polycrystalline diamond in the composite polycrystalline diamond is three-dimensionally continuous in composite polycrystal and primary particles have an average particle size from 10 to 500 nm.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: July 27, 2021
    Assignees: Sumitomo Electric Industries, Ltd., A.L.M.T. Corp.
    Inventors: Hitoshi Sumiya, Takeshi Sato, Makoto Yukawa, Bunya Suemitsu
  • Patent number: 11007558
    Abstract: A diamond die includes a diamond provided with a hole for drawing a wire material, the diamond being a CVD single-crystal diamond, an axis of the hole being inclined relative to a normal direction of a crystal plane of the diamond.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: May 18, 2021
    Assignees: Sumitomo Electric Hardmetal Corp., Sumitomo Electric Industries, Ltd., A.L.M.T. Corp.
    Inventors: Makoto Yukawa, Bunya Suemitsu, Takuya Kinoshita, Shigetoshi Sumimoto, Yutaka Kobayashi, Akihiko Ueda, Natsuo Tatsumi, Yoshiki Nishibayashi, Hitoshi Sumiya
  • Publication number: 20210008625
    Abstract: A molybdenum material having a diameter of 75 mm or more and a length of 250 mm or more, and having a relative density of 99.5% or more.
    Type: Application
    Filed: March 20, 2019
    Publication date: January 14, 2021
    Applicant: A.L.M.T. Corp.
    Inventors: Akihiro YOSHIDA, Takanori KADOKURA, Tomohiro TAKIDA
  • Publication number: 20210013122
    Abstract: Provided is a plating film containing Au and Tl, including Tl oxides including Tl2O on a surface of the plating film, a ratio of Tl atoms constituting Tl2O to a total of Tl atoms constituting the Tl oxides and Tl atoms constituting Tl simple substances on the surface being 40% or more.
    Type: Application
    Filed: February 26, 2019
    Publication date: January 14, 2021
    Applicants: Sumitomo Electric Industries, Ltd., A.L.M.T. Corp.
    Inventors: Kengo GOTO, Akihisa HOSOE, Tadashi ARIKAWA, Hiroya SATO, Masatoshi NAGASHIMA, Shohei MURAKAMI
  • Publication number: 20210002769
    Abstract: A composite member includes: a substrate formed of a composite material containing a plurality of diamond grains and a metal phase; and a coating layer made of metal. The surface of the substrate includes a surface of the metal phase, and a protrusion formed of a part of at least one diamond grain of the diamond grains and protruding from the surface of the metal phase. In a plan view, the coating layer includes a metal coating portion, and a grain coating portion. A ratio of a thickness of the grain coating portion to a thickness of the metal coating portion is equal to or less than 0.80. The coating layer has a surface roughness as an arithmetic mean roughness Ra of less than 2.0 ?m.
    Type: Application
    Filed: January 30, 2019
    Publication date: January 7, 2021
    Applicants: Sumitomo Electric Industries, Ltd., A.L.M.T. Corp.
    Inventors: Kengo GOTO, Tomoaki IKEDA, Akihisa HOSOE, Masanori SUGISAWA, Fukuto ISHIKAWA, Hideaki MORIGAMI
  • Patent number: 10875152
    Abstract: A super-abrasive grinding wheel includes a core and a super-abrasive grain layer provided on a surface of the core, the super-abrasive grain layer including diamond abrasive grains and CBN abrasive grains, the diamond abrasive grains and the CBN abrasive grains being fixed to the core in a single layer by a binder.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: December 29, 2020
    Assignee: A.L.M.T. Corp.
    Inventor: Nobuhide Nakamura
  • Publication number: 20200392606
    Abstract: A powder containing tungsten carbide has an Fsss particle size of greater than or equal to 0.3 ?m and less than or equal to 1.5 ?m, and a content rate of the tungsten carbide of greater than or equal to 90% by mass. The powder has a crystallite size (average particle diameter) Y satisfying a relational expression of Y?0.1×X+0.20 (X: the Fsss particle size of the power containing tungsten carbide).
    Type: Application
    Filed: November 13, 2018
    Publication date: December 17, 2020
    Applicant: A.L.M.T. Corp.
    Inventors: Takayuki FUDO, Kazuo SASAYA, Takehiko HAYASHI
  • Patent number: 10858252
    Abstract: A complex carbonitride powder contains Ti as a main component element and at least one additional element selected from the group consisting of Zr, Hf, V, Nb, Ta, Cr, Mo, W, Al, and Si. The complex carbonitride powder includes a plurality of complex carbonitride particles containing Ti and the additional element. The plurality of complex carbonitride particles include a plurality of homogeneous composition particles where average concentrations of Ti and the additional element in each complex carbonitride particle have a difference in a range of greater than or equal to ?5 atom % and less than or equal to 5 atom % from average concentrations of Ti and the additional element in the whole complex carbonitride powder. A cross-sectional area of the homogeneous composition particles is greater than or equal to 90% of a cross-sectional area of the complex carbonitride particles 1p.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: December 8, 2020
    Assignees: Sumitomo Electric Industries, Ltd., A.L.M.T. Corp.
    Inventors: Masato Michiuchi, Keiichi Tsuda, Yoshihiro Minato, Tomoyuki Ishida, Akihide Matsumoto, Takehiko Hayashi