Patents Assigned to AT&T Corp.
  • Publication number: 20190092638
    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: Application
    Filed: October 21, 2016
    Publication date: March 28, 2019
    Applicants: Sumitomo Electric Industries, Ltd., A.L.M.T. Corp.
    Inventors: Masato Michiuchi, Keiichi Tsuda, Yoshihiro Minato, Tomoyuki Ishida, Akihide Matsumoto, Takehiko Hayashi
  • Patent number: 10215512
    Abstract: [Problem] To provide a heat spreader capable of removing heat from an element more efficiently and immediately than an existing one, and also capable of satisfactorily responding to further enhancement in performance and output of various apparatuses, and a method for efficiently manufacturing the same. [Solution] A heat spreader includes a Cu—Mo layer made of a Cu—Mo composite material and having an average thickness of less than or equal to 0.6 mm and a variation in thickness of less than or equal to 0.1 mm, and a Cu layer directly stacked on each of both surfaces thereof. A method for manufacturing the heat spreader includes planarizing a plate material of the Cu—Mo composite material constituting the Cu—Mo layer, and roll-bonding a Cu plate constituting the Cu layer to each of both surfaces thereof.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: February 26, 2019
    Assignee: A.L.M.T. Corp.
    Inventors: Hiroaki Oki, Tadashi Arikawa, Shouichi Inaba
  • Publication number: 20190039211
    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: Application
    Filed: November 28, 2016
    Publication date: February 7, 2019
    Applicant: A.L.M.T. Corp.
    Inventor: Nobuhide Nakamura
  • Patent number: 10174410
    Abstract: A heat-resistant molybdenum alloy of this invention comprises a first phase containing Mo as a main component and a second phase comprising a Mo—Si—B-based intermetallic compound particle phase, wherein the balance is an inevitable impurity and wherein the Si content is 0.05 mass % or more and 0.80 mass % or less and the B content is 0.04 mass % or more and 0.60 mass % or less.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: January 8, 2019
    Assignee: A.L.M.T. Corp.
    Inventors: Takanori Kadokura, Hidenobu Nishino, Ayuri Tsuji, Shigekazu Yamazaki, Akihiko Ikegaya
  • Patent number: 10100390
    Abstract: A heat-resistant member comprising a molybdenum alloy that comprises a first phase containing Mo as a main component and a second phase comprising a Mo—Si—B-based intermetallic compound particle phase, wherein the balance is an inevitable impurity and wherein the Si content is 0.05 mass % or more and 0.80 mass % or less and the B content is 0.04 mass % or more and 0.60 mass % or less. The member may be coated.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: October 16, 2018
    Assignee: A.L.M.T. Corp.
    Inventors: Takanori Kadokura, Hidenobu Nishino, Ayuri Tsuji, Shigekazu Yamazaki, Akihiko Ikegaya
  • Patent number: 10011890
    Abstract: A method of producing sodium tungstate of this invention including allowing cemented carbide scrap containing tungsten to react with a molten salt containing sodium sulfate and having added thereto a metal oxide, to thereby obtain sodium tungstate.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: July 3, 2018
    Assignee: A.L.M.T. Corp.
    Inventors: Takeshi Itakura, Akihiko Ikegaya, Yoshiharu Yamamoto
  • Patent number: 9970082
    Abstract: A heat-resistant alloy that satisfies physical properties such as proof stress and hardness adapted to an increase in the melting point of a welding object compared to conventional alloys is provided. The heat resistant alloy includes a first phase, as a main component, containing a Mo or W metal phase, a second phase containing a Mo—Si—B—based alloy, and a third phase containing titanium carbonitride, wherein the balance is inevitable compounds and inevitable impurities.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: May 15, 2018
    Assignee: A.L.M.T.CORP.
    Inventors: Shigekazu Yamazaki, Ayuri Tsuji, Masahiro Katoh, Akihiko Ikegaya
  • Patent number: 9884367
    Abstract: A Mo—Si—B-based alloy for a heat-resistant alloy that satisfies, more than conventional, physical properties such as proof stress and hardness adapted to an increase in the melting point of 5 a welding object. The Mo—Si—B-based alloy powder is such that the full width at half maximum of (600) of Mo5SiB2 in X-ray diffraction peak data is 0.08 degrees or more and 0.7 degrees or less.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: February 6, 2018
    Assignee: A.L.M.T. Corp.
    Inventors: Shigekazu Yamazaki, Ayuri Tsuji, Masahiro Katoh, Seiji Nakabayashi, Akihiko Ikegaya
  • Patent number: 9803291
    Abstract: An object of this invention is to provide a crucible for growing a sapphire single crystal, which is optimized for providing a sapphire single crystal and is reusable. A crucible for growing a sapphire single crystal of this invention includes: a base material (3) containing molybdenum as a main component and having a crucible shape; and a coating layer (5) with which only an inner periphery of the base material (3) is coated and which is formed of tungsten and inevitable impurities, in which the coating layer (5) has a surface roughness Ra of 5 ?m or more and 20 ?m or less.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: October 31, 2017
    Assignee: A.L.M.T. Corp.
    Inventors: Masahiro Katoh, Makoto Watanabe
  • Publication number: 20170145280
    Abstract: Provided are a diamond composite material which is excellent in thermal conductivity, suitable as a material for a heat radiating member, and dense, the heat radiating member, and a method for producing a diamond composite material that can productively produce a diamond composite material which is excellent in wettability between diamond and metal and dense. The diamond composite material includes: a coated diamond particle including a diamond particle and a carbide layer covering a surface of the diamond particle and including an element of group 4 of the periodic table; and silver or a silver alloy binding such coated diamond particles together, with an oxygen content of 0.1 mass % or less.
    Type: Application
    Filed: September 1, 2015
    Publication date: May 25, 2017
    Applicants: A.L.M.T. Corp., A.L.M.T. Corp.
    Inventors: Tatsuya Morikawa, Takanori Kadokura, Kensuke Osawa
  • Publication number: 20170107595
    Abstract: The purpose of the present invention is to provide a solution for use in the extraction of cobalt, whereby it becomes possible to extract cobalt at lower cost and more safely compared with a case in which a conventional one is used. The solution for use in the extraction of cobalt according to the present invention comprises: an ionic liquid containing a quaternary ammonium group; and an organic solvent which exists in such a state that the organic solvent is mixed with the ionic liquid and which has a kauri-butanol value of 60 or more.
    Type: Application
    Filed: February 27, 2015
    Publication date: April 20, 2017
    Applicant: A.L.M.T.CORP.
    Inventors: Takeshi ITAKURA, Seiji NAKABAYASHI, Masaru IKEDA, Akihiko IKEGAYA
  • Patent number: 9556501
    Abstract: A magnesium-based composite member is provided with a through hole through which a fastening member for attachment to a fixing target is to be inserted. A substrate is provided with a substrate hole through which the fastening member is to be inserted, and made of a composite material which is a composite of SiC and a matrix metal which is any of magnesium and a magnesium alloy. A receiving portion is attached to the substrate and made of a metal material different from the matrix metal. The receiving portion is provided with a receiving portion hole through which the fastening member is to be inserted, and at least a part of an inner circumferential surface of the through hole is formed from an inner circumferential surface of the receiving portion hole.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: January 31, 2017
    Assignees: Sumitomo Electric Industries, Ltd., A.L.M.T. Corp
    Inventors: Isao Iwayama, Taichiro Nishikawa, Yoshiyuki Takaki, Toshiya Ikeda, Shigeki Koyama
  • Patent number: 9512504
    Abstract: Provided are a method for producing sodium tungstate by supplying an oxidant made of sodium nitrate or sodium nitrite to bring a tungsten containing material and the oxidant into contact with each other in an atmosphere containing oxygen to thereby continuously produce a reaction product; a method for collecting tungsten using the method; and an apparatus for producing sodium tungstate. Also provided are a method for producing a sodium tungstate aqueous solution in which a reductant is introduced into a melt containing the above-described reaction product which is then dissolved in water; and a method for collecting tungsten using the method.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: December 6, 2016
    Assignees: A.L.M.T Corp., SUMITOMO ELECTRIC HARDMETAL CORP., Sumitomo ELectric Industries, Ltd.
    Inventors: Yoshiharu Yamamoto, Kazuo Sasaya, Takayuki Fudo, Akira Nakano, Syunsuke Yamanaka, Takahisa Iguchi, Fumiatsu Sato, Akihiko Ikegaya
  • Patent number: 9502201
    Abstract: Provided is a tungsten electrode material that can improve the life of an electrode than conventional by the use of a material in place of thorium oxide. The tungsten electrode material includes a tungsten base alloy and oxide particles dispersed in the tungsten base alloy, wherein the oxide particle is an oxide solid solution in which a Zr oxide and/or a Hf oxide and an oxide of at least one or more kinds of rare earth elements selected from Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu are solid-dissolved.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: November 22, 2016
    Assignee: A.L.M.T. Corp.
    Inventors: Seiji Nakabayashi, Masahiro Katoh, Yoshiharu Yamamoto, Toshihiko Yoshida, Norihiko Hasegawa
  • Patent number: 9347120
    Abstract: A composite member has a substrate made of a composite material having SiC combined with magnesium or a magnesium alloy, and has a warpage degree of not less than 0.01×10?3 and not more than 10×10?3, the warpage degree being defined as lmax/Dmax, where lmax being a difference between a maximum value and a minimum value of surface displacement of one surface of composite member measured along a longest side thereof, and Dmax being a length of the longest side. Thereby, a composite member capable of efficiently dissipating heat to an installation object, a heat-dissipating member using the composite member, and a semiconductor device having the heat-dissipating member are provided.
    Type: Grant
    Filed: February 20, 2012
    Date of Patent: May 24, 2016
    Assignees: SUMITOMO ELECTRIC INDUSTREIS, LTD., A.L.M.T. Corp.
    Inventors: Isao Iwayama, Taichiro Nishikawa, Toshiya Ikeda, Shigeki Koyama
  • Patent number: 9249479
    Abstract: Provided are a method for producing sodium tungstate by supplying an oxidant made of sodium nitrate or sodium nitrite to bring a tungsten containing material and the oxidant into contact with each other in an atmosphere containing oxygen to thereby continuously produce a reaction product; a method for collecting tungsten using the method; and an apparatus for producing sodium tungstate. Also provided are a method for producing a sodium tungstate aqueous solution in which a reductant is introduced into a melt containing the above-described reaction product which is then dissolved in water; and a method for collecting tungsten using the method.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: February 2, 2016
    Assignees: A.L.M.T. Corp., SUMITOMO ELECTRIC HARDMETAL CORP., Sumitomo Electric Industries, Ltd.
    Inventors: Yoshiharu Yamamoto, Kazuo Sasaya, Takayuki Fudo, Akira Nakano, Syunsuke Yamanaka, Takahisa Iguchi, Fumiatsu Sato, Akihiko Ikegaya
  • Publication number: 20160024615
    Abstract: A method of producing sodium tungstate of this invention including allowing cemented carbide scrap containing tungsten to react with a molten salt containing sodium sulfate and having added thereto a metal oxide, to thereby obtain sodium tungstate.
    Type: Application
    Filed: March 6, 2014
    Publication date: January 28, 2016
    Applicant: A.L.M.T. Corp.
    Inventors: Takeshi ITAKURA, Akihiko IKEGAYA, Yoshiharu YAMAMOTO
  • Patent number: 9199433
    Abstract: There is provided a metal laminated structure comprising a first metal layer, a second metal layer and a third metal layer, the first metal layer being disposed on one surface of the second metal layer, the third metal layer being disposed on the other surface of the second metal layer, the first metal layer including at least one of tungsten and molybdenum, the second metal layer including copper, the third metal layer including at least one of tungsten and molybdenum, and a method for producing the metal laminated structure.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: December 1, 2015
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., A.L.M.T. CORP.
    Inventors: Koji Nitta, Masatoshi Majima, Shinji Inazawa, Yugaku Abe, Hiroshi Yokoyama, Osamu Suwata, Shinichi Yamagata
  • Patent number: D771167
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: November 8, 2016
    Assignee: A.L.M.T. CORP.
    Inventors: Yoshitake Fukaya, Masahiro Kato, Makoto Watanabe, Kiyohide Sasaki
  • Patent number: D839444
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: January 29, 2019
    Assignee: A.L.M.T. CORP.
    Inventors: Yoshitake Fukaya, Masahiro Kato, Makoto Watanabe, Kiyohide Sasaki