Patents by Inventor Katsuhito Yoshida
Katsuhito Yoshida 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).
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Patent number: 11268173Abstract: A magnesium alloy containing Al, Sr, Ca, and Mn, with the balance being Mg and inevitable impurities, the magnesium alloy having: a structure having an ?-Mg phase, and a precipitate dispersed in at least one of a grain boundary of the ?-Mg phase and a cell boundary, the precipitate including: at least one phase selected from a group A consisting of an Al2Sr phase, an Al4Sr phase, a (Mg, Al)2Sr phase, and a (Mg, Al)4Sr phase; and at least one phase selected from a group B consisting of an Al2Ca phase and a (Mg, Al)2Ca phase, the magnesium alloy having, in a cross section, a total area rate of a group A precipitate and a group B precipitate of greater than or equal to 2.5% and less than or equal to 30%.Type: GrantFiled: November 15, 2018Date of Patent: March 8, 2022Assignees: Sumitomo Electric Industries, Ltd., National University Corporation University of ToyamaInventors: Manabu Mizutani, Katsuhito Yoshida, Seiji Saikawa
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Publication number: 20200354819Abstract: A magnesium alloy containing Al, Sr, Ca, and Mn, with the balance being Mg and inevitable impurities, the magnesium alloy having: a structure having an ?-Mg phase, and a precipitate dispersed in at least one of a grain boundary of the ?-Mg phase and a cell boundary, the precipitate including: at least one phase selected from a group A consisting of an Al2Sr phase, an Al4Sr phase, a (Mg, Al)2Sr phase, and a (Mg, Al)4Sr phase; and at least one phase selected from a group B consisting of an Al2Ca phase and a (Mg, Al)2Ca phase, the magnesium alloy having, in a cross section, a total area rate of a group A precipitate and a group B precipitate of greater than or equal to 2.5% and less than or equal to 30%.Type: ApplicationFiled: November 15, 2018Publication date: November 12, 2020Applicants: Sumitomo Electric Industries, Ltd., NATIONAL UNIVERSITY CORPORATION UNIVERSITY OF TOYAMAInventors: Manabu MIZUTANI, Katsuhito YOSHIDA, Seiji SAIKAWA
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Patent number: 10808302Abstract: A magnesium alloy is provided that includes: 5.0 mass % or more and 15.0 mass % or less of Al; 2.5 mass % or more and 7.0 mass % or less of Sr; 0.05 mass % or more and less than 3.0 mass % of Ca; and 0.1 mass % or more and 0.6 mass % or less of Mn, with a remainder including Mg and inevitable impurities.Type: GrantFiled: July 13, 2017Date of Patent: October 20, 2020Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION UNIVERSIT OF TOYAMAInventors: Manabu Mizutani, Katsuhito Yoshida, Nozomu Kawabe, Seiji Saikawa
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Publication number: 20200157662Abstract: A magnesium alloy sheet formed of a magnesium-based alloy containing, on a mass percent basis, Al: 5.0% or more and 6.5% or less, Sr: 0.2% or more and 1.0% or less, Zn: 0.1% or more and 0.75% or less, and Mn: 0.1% or more and 0.5% or less, the remainder being magnesium and incidental impurities.Type: ApplicationFiled: June 5, 2018Publication date: May 21, 2020Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yuri JONO, Yu YOSHIDA, Katsuhito YOSHIDA
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Publication number: 20180371583Abstract: A magnesium alloy is provided that includes: 5.0 mass % or more and 15.0 mass % or less of Al; 2.5 mass % or more and 7.0 mass % or less of Sr; 0.05 mass % or more and less than 3.0 mass % of Ca; and 0.1 mass % or more and 0.6 mass % or less of Mn, with a remainder including Mg and inevitable impurities.Type: ApplicationFiled: July 13, 2017Publication date: December 27, 2018Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION UNIVERSITY OF TOYAMAInventors: Manabu MIZUTANI, Katsuhito YOSHIDA, Nozomu KAWABE, Seiji SAIKAWA
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Patent number: 10046397Abstract: The diamond coated tool of the present invention is a diamond coated tool including a base material and a diamond layer coating a surface of the base material, and characterized in that the surface of the base material has an arithmetic average roughness Ra of not less than 0.1 ?m and not more than 10 ?m and an average length of roughness profile elements RSm of not less than 3.1 ?m and not more than 5.4 ?m, and that the diamond layer has a plurality of cavities at a portion bordering on the base material.Type: GrantFiled: April 14, 2017Date of Patent: August 14, 2018Assignees: Sumitomo Electric Industries, Ltd., SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Katsuhito Yoshida, Shigeru Yoshida, Yuichiro Seki, Kiichi Meguro, Shinji Matsukawa
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Publication number: 20180147634Abstract: The diamond coated tool of the present invention is a diamond coated tool including a base material and a diamond layer coating a surface of the base material, and characterized in that the surface of the base material has an arithmetic average roughness Ra of not less than 0.1 ?m and not more than 10 ?m and an average length of roughness profile elements RSm of not less than 3.1 ?m and not more than 5.4 ?m, and that the diamond layer has a plurality of cavities at a portion bordering on the base material.Type: ApplicationFiled: April 14, 2017Publication date: May 31, 2018Applicants: Sumitomo Electric Industries, Ltd., SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Katsuhito Yoshida, Shigeru Yoshida, Yuichiro Seki, Kiichi Meguro, Shinji Matsukawa
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Patent number: 9731355Abstract: The present invention provides a diamond coated tool which is resistant to exfoliation at an interface between a base material and a diamond layer. The diamond coated tool of the present invention is a diamond coated tool including a base material and a diamond layer coating a surface of the base material, and characterized in that the surface of the base material has an arithmetic average roughness Ra of not less than 0.1 ?m and not more than 10 ?m and an average length of roughness profile elements RSm of not less than 1 ?m and not more than 100 ?m, and that the diamond layer has a plurality of cavities extending from a portion bordering on the base material in a crystal growth direction.Type: GrantFiled: February 25, 2016Date of Patent: August 15, 2017Assignees: Sumitomo Electric Industries, Ltd., SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Katsuhito Yoshida, Shigeru Yoshida, Yuichiro Seki, Kiichi Meguro, Shinji Matsukawa
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Publication number: 20170216927Abstract: The diamond coated tool of the present invention is a diamond coated tool including a base material and a diamond layer coating a surface of the base material, and characterized in that the surface of the base material has an arithmetic average roughness Ra of not less than 0.1 ?m and not more than 10 ?m and an average length of roughness profile elements RSm of not less than 3.1 ?m and not more than 5.4 ?m, and that the diamond layer has a plurality of cavities at a portion bordering on the base material.Type: ApplicationFiled: April 14, 2017Publication date: August 3, 2017Inventors: Katsuhito Yoshida, Shigeru Yoshida, Yuichiro Seki, Kiichi Meguro, Shinji Matsukawa
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Publication number: 20170152425Abstract: An AlN sintered compact includes AlN crystal grains and a grain boundary phase, and the grain boundary phase is lower in Vickers hardness than the AlN crystal grains.Type: ApplicationFiled: April 14, 2015Publication date: June 1, 2017Inventors: Hideaki Awata, Katsuhito Yoshida, Koichi Sogabe, Yoshiyuki Hirose, Yasushi Itoh, Noboru Uenishi, Yuka Kondo, Sadamu Ishidu, Takehisa Yamamoto
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Publication number: 20160175941Abstract: The present invention provides a diamond coated tool which is resistant to exfoliation at an interface between a base material and a diamond layer. The diamond coated tool of the present invention is a diamond coated tool including a base material and a diamond layer coating a surface of the base material, and characterized in that the surface of the base material has an arithmetic average roughness Ra of not less than 0.1 ?m and not more than 10 ?m and an average length of roughness profile elements RSm of not less than 1 ?m and not more than 100 ?m, and that the diamond layer has a plurality of cavities extending from a portion bordering on the base material in a crystal growth direction.Type: ApplicationFiled: February 25, 2016Publication date: June 23, 2016Inventors: Katsuhito Yoshida, Shigeru Yoshida, Yuichiro Seki, Kiichi Meguro, Shinji Matsukawa
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Patent number: 9302327Abstract: The present invention provides a diamond coated tool which is resistant to exfoliation at an interface between a base material and a diamond layer. The diamond coated tool of the present invention is a diamond coated tool including a base material and a diamond layer coating a surface of the base material, and characterized in that the surface of the base material has an arithmetic average roughness Ra of not less than 0.1 ?m and not more than 10 ?m and an average length of roughness profile elements RSm of not less than 1 ?m and not more than 100 ?m, and that the diamond layer has a plurality of cavities extending from a portion bordering on the base material in a crystal growth direction.Type: GrantFiled: June 8, 2010Date of Patent: April 5, 2016Assignees: Sumitomo Electric Industries, Ltd., SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Katsuhito Yoshida, Shigeru Yoshida, Yuichiro Seki, Kiichi Meguro, Shinji Matsukawa
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Patent number: 9187376Abstract: A sintered compact contains cubic sialon, ?-sialon, and at least one of a first component and a second component. The first component is at least one element selected from the group consisting of iron, cobalt, nickel, and group 4 elements, group 5 elements, and group 6 elements of the periodic table. The second component is at least one compound containing at least one element selected from the group consisting of group 4 elements, group 5 elements, and group 6 elements and at least one element selected from the group consisting of carbon, nitrogen, and boron.Type: GrantFiled: December 21, 2012Date of Patent: November 17, 2015Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Kenichi Watatani, Michiko Matsukawa, Katsuhito Yoshida, Daisuke Murakami
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Patent number: 8911702Abstract: An optical component of the present invention is composed of a ZnSe polycrystal body, and the ZnSe polycrystal body is constituted by crystal grains with an average grain size larger than or equal to 50 ?m and smaller than or equal to 1 mm and has a relative density higher than or equal to 99%.Type: GrantFiled: September 28, 2012Date of Patent: December 16, 2014Assignees: Sumitomo Electric Industries, Ltd., Sumitomo Electric Hardmetal Corp.Inventors: Katsuhito Yoshida, Kenichi Kurisu, Tatsuya Kyotani
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Publication number: 20140178138Abstract: A sintered compact contains cubic sialon, ?-sialon, and at least one of a first component and a second component. The first component is at least one element selected from the group consisting of iron, cobalt, nickel, and group 4 elements, group 5 elements, and group 6 elements of the periodic table. The second component is at least one compound containing at least one element selected from the group consisting of group 4 elements, group 5 elements, and group 6 elements and at least one element selected from the group consisting of carbon, nitrogen, and boron.Type: ApplicationFiled: December 21, 2012Publication date: June 26, 2014Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Kenichi WATATANI, Michiko MATSUKAWA, Katsuhito YOSHIDA, Daisuke MURAKAMI
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Publication number: 20140147374Abstract: An optical component of the present invention is composed of a ZnSe polycrystal body, and the ZnSe polycrystal body is constituted by crystal grains with an average grain size larger than or equal to 50 ?m and smaller than or equal to 1 mm and has a relative density higher than or equal to 99%.Type: ApplicationFiled: September 28, 2012Publication date: May 29, 2014Applicants: Sumitomo Electric Hardmetal Corp., Sumitomo Electric Industries, Ltd.Inventors: Katsuhito Yoshida, Kenichi Kurisu, Tatsuya Kyotani
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Publication number: 20110247929Abstract: A diamond electrode having an oxidation resistant diamond film which will not separate from the electrode during electrolysis with highly oxidizing materials. The thickness of the diamond film is 20 pm or more and the diamond film should preferably cover opposite side surfaces of a substrate in such a manner as to also cover end surfaces 2a of the substrate. The surfaces of the substrate are covered with a plurality of diamond layers to form the film using repeated steps of forming separate diamond layers with each diamond layer having a thickness of 10 to 30 pm on one of the surfaces of the substrate and then forming a diamond layer having a thickness of 10 to 30 pm on the other surface of the substrate. Thus, it is possible to form a nonporous surface of diamond layer and prevent deterioration of an electrode caused by the separation of a diamond film.Type: ApplicationFiled: September 18, 2009Publication date: October 13, 2011Inventors: Tatsuo Nagai, Norihito Ikemiya, Katsuhito Yoshida, Shigeru Yoshida
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Publication number: 20110250394Abstract: The present invention provides a diamond coated tool which is resistant to exfoliation at an interface between a base material and a diamond layer. The diamond coated tool of the present invention is a diamond coated tool including a base material and a diamond layer coating a surface of the base material, and characterized in that the surface of the base material has an arithmetic average roughness Ra of not less than 0.1 ?m and not more than 10 ?m and an average length of roughness profile elements RSm of not less than 1 ?m and not more than 100 ?m, and that the diamond layer has a plurality of cavities extending from a portion bordering on the base material in a crystal growth direction.Type: ApplicationFiled: June 8, 2010Publication date: October 13, 2011Applicants: SUMITOMO ELECTRIC HARDMETAL CORP., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Katsuhito Yoshida, Shigeru Yoshida, Yuichiro Seki, Kiichi Meguro, Shinji Matsukawa
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Patent number: 7951274Abstract: A diamond electrode includes a conductive silicon substrate having a plurality of pores. The diamond electrode also includes a conductive diamond covering the conductive silicon substrate. The inner wall surfaces of the plurality of pores are at an angle of 60° to 85° with respect to a substrate of the conductive silicon substrate.Type: GrantFiled: October 25, 2006Date of Patent: May 31, 2011Assignee: Sumitomo Electric Hardmetal Corp.Inventors: Shigeru Yoshida, Katsuhito Yoshida, Toshiya Takahashi, Takahisa Iguchi, Fuminori Higuchi
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Publication number: 20100038235Abstract: The present invention provides a diamond electrode that, in waste water treatment or production of functional water by using electrolysis, does not cause contamination of a solution or release of toxic substances, achieves enhancement of the energy efficiency, has excellent durability, and can endure prolonged use without damage. The present invention further provides a treatment device where the above electrode is used, and a method for manufacturing the above electrode. In a diamond electrode according to the present invention, the electrode includes a conductive diamond film covering one surface of a substrate. Assuming that the thickness of the substrate is T (?m) and the thickness of the conductive diamond film is t1 (?m), the ratio between them is 0.0010?t1/T?0.022 and 10?t1?70.Type: ApplicationFiled: October 15, 2008Publication date: February 18, 2010Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Shigeru Yoshida, Toshiya Takahashi, Yuichiro Seki, Katsuhito Yoshida, Fuminori Higuchi