Patents Assigned to A.L.M.T. Corp.
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Publication number: 20200066505Abstract: A tungsten electrode material contains a tungsten-based material and oxide particles dispersed in the tungsten-based material. The oxide particles are composed of an oxide solid solution in which a Zr oxide and/or an Hf oxide and an oxide of at least one rare earth selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu are dissolved as a solid solution. A content of the rare-earth oxide with respect to a total amount of the Zr oxide and/or the Hf oxide and the rare-earth oxide is not lower than 66 mol % and not higher than 97 mol %, a content of the oxide solid solution is not lower than 0.5 mass % and not higher than 9 mass %, and the remainder is composed substantially of tungsten.Type: ApplicationFiled: March 23, 2018Publication date: February 27, 2020Applicant: A.L.M.T. Corp.Inventors: Seiji NAKABAYASHI, Tomohiro TAKIDA
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Patent number: 10553519Abstract: A heat radiating member includes: a composite portion composed of a composite material which contains particles of a satisfactorily thermally conductive material in a metal matrix; and a metal layer formed on at least one surface of the composite portion and composed of a metal. A method for producing a heat radiating member includes: a preparation step to prepare a composite material which contains particles of a satisfactorily thermally conductive material in a metal matrix; a powder arrangement step to dispose a metal powder composed of metal particles on at least one surface of the composite material; and a heating step to heat the composite material and the metal powder, with the metal powder disposed on the composite material, to form a metal layer composed of a metal of the metal powder on a composite portion composed of the composite material.Type: GrantFiled: September 1, 2015Date of Patent: February 4, 2020Assignees: A.L.M.T. Corp, Sumitomo Electric Industries, Ltd.Inventors: Tatsuya Morikawa, Takanori Kadokura, Isao Iwayama
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Patent number: 10465266Abstract: The present heat-resistant tungsten alloy has a first phase containing W as a major component, a second phase having a carbonitride of at least one element of Ti, Zr and Hf and containing the carbonitride as a major component when W is removed, and a third phase having a carbide of at least one element of group 5A elements in the periodic table and containing the carbide as a major component when W is removed, the heat-resistant tungsten alloy having a Vickers hardness of 550 Hv or more at a room temperature, a displacement of 1 mm or more when leading to fracture, as determined in a three point bending test at 1200° C., and a 0.2% proof stress of 900 MPa or more, as determined in the three point bending test at 1200° C.Type: GrantFiled: May 22, 2015Date of Patent: November 5, 2019Assignee: A.L.M.T. CORP.Inventors: Ayuri Tsuji, Shigekazu Yamazaki, Akihiko Ikegaya, Noboru Uenishi
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Publication number: 20190329308Abstract: A shaped diamond die includes a polycrystalline diamond, the polycrystalline diamond having a machining hole, wherein a length D of a side of the machining hole is 100 ?m or less, a corner R is 20 ?m or less, the shaped diamond die includes a bearing portion, a surface roughness Sa of the bearing portion is 0.05 ?m or less, and an average grain size of the polycrystalline diamond is 500 nm or less.Type: ApplicationFiled: December 8, 2017Publication date: October 31, 2019Applicant: A.L.M.T. Corp.Inventors: Toshiaki SHINDO, Takuya ASANUMA
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Publication number: 20190297725Abstract: 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: ApplicationFiled: November 8, 2017Publication date: September 26, 2019Applicants: Sumitomo Electric Industries, Ltd., A.L.M.T. Corp.Inventors: Isao IWAYAMA, Shigeki KOYAMA, Masashi OKAMOTO, Yuta INOUE, Hiroyuki KONTANI, Takehisa YAMAMOTO
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Patent number: 10307888Abstract: A superabrasive wheel having a superabrasive grain layer having superabrasive grains fixed by a binder, a ratio of an area occupied by the superabrasive grains in the superabrasive grain layer being 20% to 70%.Type: GrantFiled: September 8, 2016Date of Patent: June 4, 2019Assignee: A.L.M.T. Corp.Inventors: Masanori Hoshika, Hikaru Yamazaki, Hirohisa Koterasawa, Kenji Fukushima
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Publication number: 20190092638Abstract: 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: ApplicationFiled: October 21, 2016Publication date: March 28, 2019Applicants: Sumitomo Electric Industries, Ltd., A.L.M.T. Corp.Inventors: Masato Michiuchi, Keiichi Tsuda, Yoshihiro Minato, Tomoyuki Ishida, Akihide Matsumoto, Takehiko Hayashi
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Patent number: 10215512Abstract: [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: GrantFiled: May 13, 2015Date of Patent: February 26, 2019Assignee: A.L.M.T. Corp.Inventors: Hiroaki Oki, Tadashi Arikawa, Shouichi Inaba
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Publication number: 20190039211Abstract: 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: ApplicationFiled: November 28, 2016Publication date: February 7, 2019Applicant: A.L.M.T. Corp.Inventor: Nobuhide Nakamura
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Patent number: 10174410Abstract: 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: GrantFiled: March 12, 2013Date of Patent: January 8, 2019Assignee: A.L.M.T. Corp.Inventors: Takanori Kadokura, Hidenobu Nishino, Ayuri Tsuji, Shigekazu Yamazaki, Akihiko Ikegaya
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Patent number: 10100390Abstract: 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: GrantFiled: November 3, 2014Date of Patent: October 16, 2018Assignee: A.L.M.T. Corp.Inventors: Takanori Kadokura, Hidenobu Nishino, Ayuri Tsuji, Shigekazu Yamazaki, Akihiko Ikegaya
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Patent number: 10011890Abstract: 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: GrantFiled: March 6, 2014Date of Patent: July 3, 2018Assignee: A.L.M.T. Corp.Inventors: Takeshi Itakura, Akihiko Ikegaya, Yoshiharu Yamamoto
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Patent number: 9970082Abstract: 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: GrantFiled: December 13, 2012Date of Patent: May 15, 2018Assignee: A.L.M.T.CORP.Inventors: Shigekazu Yamazaki, Ayuri Tsuji, Masahiro Katoh, Akihiko Ikegaya
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Patent number: 9884367Abstract: 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: GrantFiled: December 21, 2012Date of Patent: February 6, 2018Assignee: A.L.M.T. Corp.Inventors: Shigekazu Yamazaki, Ayuri Tsuji, Masahiro Katoh, Seiji Nakabayashi, Akihiko Ikegaya
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Patent number: 9803291Abstract: 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: GrantFiled: September 12, 2013Date of Patent: October 31, 2017Assignee: A.L.M.T. Corp.Inventors: Masahiro Katoh, Makoto Watanabe
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Publication number: 20170145280Abstract: 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: ApplicationFiled: September 1, 2015Publication date: May 25, 2017Applicants: A.L.M.T. Corp., A.L.M.T. Corp.Inventors: Tatsuya Morikawa, Takanori Kadokura, Kensuke Osawa
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Publication number: 20170107595Abstract: 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: ApplicationFiled: February 27, 2015Publication date: April 20, 2017Applicant: A.L.M.T.CORP.Inventors: Takeshi ITAKURA, Seiji NAKABAYASHI, Masaru IKEDA, Akihiko IKEGAYA
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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: D839444Type: GrantFiled: October 29, 2015Date of Patent: January 29, 2019Assignee: A.L.M.T. CORP.Inventors: Yoshitake Fukaya, Masahiro Kato, Makoto Watanabe, Kiyohide Sasaki
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Patent number: D872872Type: GrantFiled: December 5, 2018Date of Patent: January 14, 2020Assignee: A.L.M.T. CORP.Inventors: Yoshitake Fukaya, Masahiro Kato, Makoto Watanabe, Kiyohide Sasaki