Patents Assigned to AT&T Corp.
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Patent number: 9556501Abstract: 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: GrantFiled: March 16, 2011Date of Patent: January 31, 2017Assignees: Sumitomo Electric Industries, Ltd., A.L.M.T. CorpInventors: Isao Iwayama, Taichiro Nishikawa, Yoshiyuki Takaki, Toshiya Ikeda, Shigeki Koyama
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Patent number: 9512504Abstract: 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: GrantFiled: December 23, 2013Date of Patent: December 6, 2016Assignees: 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
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Patent number: 9502201Abstract: 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: GrantFiled: December 8, 2009Date of Patent: November 22, 2016Assignee: A.L.M.T. Corp.Inventors: Seiji Nakabayashi, Masahiro Katoh, Yoshiharu Yamamoto, Toshihiko Yoshida, Norihiko Hasegawa
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Patent number: 9347120Abstract: 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: GrantFiled: February 20, 2012Date of Patent: May 24, 2016Assignees: SUMITOMO ELECTRIC INDUSTREIS, LTD., A.L.M.T. Corp.Inventors: Isao Iwayama, Taichiro Nishikawa, Toshiya Ikeda, Shigeki Koyama
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Patent number: 9249479Abstract: 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: GrantFiled: December 23, 2013Date of Patent: February 2, 2016Assignees: 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
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Publication number: 20160024615Abstract: 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: ApplicationFiled: March 6, 2014Publication date: January 28, 2016Applicant: A.L.M.T. Corp.Inventors: Takeshi ITAKURA, Akihiko IKEGAYA, Yoshiharu YAMAMOTO
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Patent number: 9199433Abstract: 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: GrantFiled: June 8, 2010Date of Patent: December 1, 2015Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., A.L.M.T. CORP.Inventors: Koji Nitta, Masatoshi Majima, Shinji Inazawa, Yugaku Abe, Hiroshi Yokoyama, Osamu Suwata, Shinichi Yamagata
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Publication number: 20150225870Abstract: 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: ApplicationFiled: September 12, 2013Publication date: August 13, 2015Applicant: A.L.M.T. CORP.Inventors: Masahiro Katoh, Makoto Watanabe
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Patent number: 9061336Abstract: One object of the present invention is to provide a wire drawing die excellent in strength and wear resistance. The wire drawing die has a core formed using highly hard diamond polycrystalline body made substantially only of diamond and produced by directly converting a raw material composition including a non-diamond type carbon material into diamond and sintering the diamond at an ultra high pressure and an ultra high temperature without adding a sintering aid or a catalyst, the polycrystalline body having a mixed construction including fine-grained diamond crystals with a maximum grain size of less than or equal to 100 nm and an average grain size of less than or equal to 50 nm and plate-like or particulate coarse-grained diamond crystals with a minimum grain size of greater than or equal to 50 nm and a maximum grain size of less than or equal to 10000 nm.Type: GrantFiled: January 18, 2008Date of Patent: June 23, 2015Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., A.L.M.T. CORP., SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Hitoshi Sumiya, Makoto Yukawa
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Patent number: 9028959Abstract: A composite member suitable for a heat radiation member of a semiconductor element and a method of manufacturing the same are provided. This composite member is a composite of magnesium or a magnesium alloy and SiC, and it has porosity lower than 3%. This composite member can be manufactured by forming an oxide film on a surface of raw material SiC, arranging coated SiC having the oxide film formed in a cast, and infiltrating this coated SiC aggregate with a molten metal (magnesium or the magnesium alloy). The porosity of the composite member can be lowered by improving wettability between SiC and the molten metal by forming the oxide film. According to this manufacturing method, a composite member having excellent thermal characteristics such as a coefficient of thermal expansion not lower than 4 ppm/K and not higher than 10 ppm/K and thermal conductivity not lower than 180 W/m·K can be manufactured.Type: GrantFiled: October 2, 2009Date of Patent: May 12, 2015Assignees: Sumitomo Electric Industries, Ltd., A. L. M. T. Corp.Inventors: Isao Iwayama, Yoshihiro Nakai, Taichiro Nishikawa, Yoshiyuki Takaki, Misato Kusakari, Toshiya Ikeda
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Patent number: 9011206Abstract: The super abrasive wheel includes a core rotating around a rotation axis and a super abrasive layer bonded to the core. The core has a first surface and a second surface located opposite to the first surface. An annular first protrusion portion protruding in the direction away from the first surface is provided at a portion of the second surface that is surrounded with the super abrasive layer. A reference surface is provided in the second surface on the inside of the first protrusion portion. The height from the reference surface to the first protrusion portion is denoted as A. A top portion having the height B from the reference surface is provided at a portion of the second surface between the first protrusion portion and the super abrasive layer. The height B is greater than the height A.Type: GrantFiled: June 9, 2010Date of Patent: April 21, 2015Assignee: A.L.M.T. Corp.Inventors: Tomohiro Ishizu, Yukio Okanishi, Teruyuki Kumazawa
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Patent number: 8993121Abstract: There is provided a metal laminated structure in which a first metal layer containing tungsten is provided on a first surface of a second metal layer containing copper and a third metal layer containing tungsten is provided on a second surface of the second metal layer opposite to the first surface, and the first metal layer contains crystal grains of tungsten in a form of a columnar crystal extending in a direction perpendicular to the first surface of the second metal layer and the third metal layer contains crystal grains of tungsten in a form of a columnar crystal extending in a direction perpendicular to the second surface of the second metal layer, and a method for producing the metal laminated structure.Type: GrantFiled: December 27, 2010Date of Patent: March 31, 2015Assignees: Sumitomo Electric Industries, Ltd., A.L.M.T. Corp.Inventors: Koji Nitta, Shinji Inazawa, Akihisa Hosoe, Masatoshi Majima, Osamu Suwata, Hiroshi Yokoyama, Shinichi Yamagata, Yugaku Abe
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Patent number: 8996641Abstract: The disclosure provides a method and corresponding system for personalizing and disbursing content material in an automated fashion based on differing characteristics or profiles of the recipients. The system includes a database of potential recipients with key characteristics such as location data, revenue, product ownership, customer status, tenure with the company/organization, payment status, credit rating, whether they have recently responded to other material, and the like. Dissemination media include email communications, collaterals, brochures, textual materials, image and video information, and any similar media, where the contents of the communication material is customized based on the key characteristics profiles of the recipients and driven by a set of business rules that can be adapted to fit various scenarios.Type: GrantFiled: May 22, 2014Date of Patent: March 31, 2015Assignee: AT&T Intellectual Property II, L.P. via a transfer from AT&T CorpInventors: David G. Belanger, Sam Houston Parker, Sarat Puthenpura, Wenjie Zhao
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Patent number: 8974674Abstract: A method for producing an ammonium tungstate aqueous solution includes the steps of: adding sulfuric acid to a solution containing tungstate ions; bringing the solution having the sulfuric acid added therein, into contact with an anion exchange resin; and bringing the anion exchange resin into contact with an aqueous solution containing ammonium ions.Type: GrantFiled: March 5, 2010Date of Patent: March 10, 2015Assignees: National University Corporation Nagoya University, A.L.M.T. Corp., Sumitomo Electric Hardmetal Corp., Sumitomo Electric Industries, Ltd.Inventors: Hideaki Ito, Takeshi Itakura, Yoshiharu Yamamoto, Kazuo Sasaya, Takuya Okuno, Fumiatsu Sato, Syunsuke Yamanaka, Akihiko Ikegaya
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Publication number: 20140373681Abstract: Provided is 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 a welding object. A Mo—Si—B-based alloy powder of this invention 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: ApplicationFiled: December 21, 2012Publication date: December 25, 2014Applicant: A.L.M.T. Corp.Inventors: Shigekazu Yamazaki, Ayuri Tsuji, Masahiro Katoh, Seiji Nakabayashi, Akihiko Ikegaya
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Patent number: 8913597Abstract: A cyclic prioritized multiple access method is disclosed which includes Fixed Deterministic Post-Backoff. Fixed deterministic post-backoff reduces conflicts between access points of overlapping cells. Contention-free sessions can be generated, one from each overlapping cell. Each active access point engages in a fixed deterministic post-backoff. A fixed deterministic backoff delay (Bkoff times a fixed number of idle time slots) is used by all access points, with the value of Bkoff being greater than the number of overlapping cells. The Bkoff should be large enough to enable the traffic that needs to be accommodated by the channel. Each access point has a backoff timer that is counted down using the shortest interframe space possible. A contention-free session is initiated when the backoff timer expires, and it is then reset to the value of Bkoff to start a new cycle.Type: GrantFiled: November 15, 2011Date of Patent: December 16, 2014Assignee: AT&T Intellectual Property II, L.P. via a transfer from AT&T Corp.Inventor: Mathilde Benveniste
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Publication number: 20140356215Abstract: Provided is 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. A heat-resistant alloy of this invention 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: ApplicationFiled: December 13, 2012Publication date: December 4, 2014Applicant: A.L.M.T.CORP.Inventors: Shigekazu Yamazaki, Ayuri Tsuji, Masahiro Kato, Akihiko Ikegaya
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Publication number: 20140308536Abstract: There is provided a flat plate-like sintered tungsten alloy that can be molded into a complex shape by press working or forge processing. The flat plate-like sintered tungsten alloy contains 85% by mass or more and 98% by mass or less of W, 1.4% by mass or more and 11% by mass or less of Ni, and 0.6% by mass or more and 6% by mass or less of at least one substance selected from the group consisting of Fe, Cu and Co, wherein an elongation percentage of the flat plate-like sintered tungsten alloy in a planar direction is 20% or more.Type: ApplicationFiled: November 27, 2012Publication date: October 16, 2014Applicant: A.L.M.T. CorpInventors: Gouhei Toyoshima, Noboru Uenishi, Norihito Goma, Satoshi Umemoto, Takanori Kadokura, Tomohiro Takida, Kazunaga Sakakibara
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Patent number: 8801816Abstract: There are provided a cemented carbide high in thermal diffusivity and excellent in wear resistance, and a cutting tool including a base material formed of this cemented carbide. The cemented carbide is a WC based cemented carbide in which a hard phase mainly constituted of WC grains is bound by a binder phase mainly constituted of Co, and is used for a cutting tool. The binder phase is substantially constituted of Co, or Co and Ni. A total content of Co and Ni is not less than 4.5 mass % and not more than 15 mass %. In this cemented carbide, the WC grains have an average diameter of not less than 0.4 ?m and not more than 4 ?m.Type: GrantFiled: August 11, 2010Date of Patent: August 12, 2014Assignees: Sumitomo Electric Industries, Ltd., Sumitomo Electric Hardmetal Corp., A.L.M.T. Corp.Inventors: Takuya Okuno, Kazuhiro Hirose, Hideki Moriguchi, Akihiko Ikegaya, Kazuo Sasaya, Yoshiharu Yamamoto
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Patent number: D771167Type: GrantFiled: October 4, 2013Date of Patent: November 8, 2016Assignee: A.L.M.T. CORP.Inventors: Yoshitake Fukaya, Masahiro Kato, Makoto Watanabe, Kiyohide Sasaki