Patents by Inventor Yoshiharu Utsumi
Yoshiharu Utsumi 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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Publication number: 20230150035Abstract: Provided is a cutting tool that can have a long tool life even when used to cut soft metals in particular. The cutting tool comprises a base body and a hard carbon film arranged on the base body, the hard carbon film includes an amorphous phase and a graphite phase, the density of the hard carbon film is no less than 2.5 g/cm3 and no more than 3.5 g/cm3, the degree of crystallinity of the hard carbon film is no more than 6.5%, and the average coordination number of the amorphous phase is no less than 2.5 and no more than 4.Type: ApplicationFiled: April 24, 2020Publication date: May 18, 2023Applicants: Sumitomo Electric Hardmetal Corp., Sumitomo Electric Industries, Ltd.Inventors: Haruyo FUKUI, Daiji TABAYASHI, Yoshihiro SAITO, Kazuya TOKUDA, Yoshiharu UTSUMI, Hajime TAKAMATSU
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Publication number: 20230123968Abstract: Provided is a cutting tool comprising a base body and a hard carbon film arranged on the base body, in which, when the cross section of the hard carbon film is observed using a high angle annular dark field scanning transmission electron microscope, the area proportion of black regions with an equivalent circle diameter of 10 nm or more is 0.7% or less, and the hard carbon film has a hydrogen content of 5 atom% or less.Type: ApplicationFiled: April 24, 2020Publication date: April 20, 2023Applicant: Sumitomo Electric Hardmetal Corp.Inventors: Daiji TABAYASHI, Haruyo FUKUI, Yoshiharu UTSUMI, Hajime TAKAMATSU
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Publication number: 20230068515Abstract: Provided is a cutting tool comprising a base body and a hard carbon film arranged on the base body, in which the hard carbon film includes an amorphous phase and a graphite phase, the degree of crystallinity of the hard carbon film is no more than 6.5%, and the degree of orientation of the graphite phase is no more than 6.Type: ApplicationFiled: April 24, 2020Publication date: March 2, 2023Applicants: Sumitomo Electric Hardmetal Corp., Sumitomo Electric Industries, Ltd.Inventors: Daiji TABAYASHI, Haruyo FUKUI, Yoshihiro SAITO, Kazuya TOKUDA, Yoshiharu UTSUMI, Hajime TAKAMATSU
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Patent number: 11408065Abstract: At least one layer in a coating located on a surface of a substrate is a domain structure layer constituted of two or more domains different in composition and a thin layer located between the domains and being different in composition from each of the domains. The thin layer is located between any one domain and any another domain and in contact therewith. When the size of each of a plurality of first domains present in the domain structure layer is defined as a diameter of a virtual circumcircle in contact with each first domain, the average value of the size of each first domain is not smaller than 1 nm and not greater than 10 nm and a thickness of the thin layer in a direction of thickness of the domain structure layer is not less than 1 atomic layer and not more than 10 atomic layers.Type: GrantFiled: December 28, 2016Date of Patent: August 9, 2022Assignees: Sumitomo Electric Industries, Ltd., Mimsi Materials ABInventors: Yoshiharu Utsumi, Paer Christoffer Arumskog, Keiichi Tsuda, Konstantinos Sarakinos, Sankara Pillay, Daniel Gunnar Magnfaelt
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Patent number: 10689748Abstract: At least one layer in a coating located on a surface of a substrate is a domain structure layer constituted of two or more domains different in composition. The average value of the size of each of first domains, defined as the diameter of a virtual circumcircle in contact with each first domain, is 1 nm to 10 nm. The average value of the nearest neighbor distance of each first domain, defined as the length of the shortest straight line connecting the center of the circumcircle with the center of another circumcircle adjacent to the circumcircle, is 1 nm to 12 nm. 95% or more of the first domains has a size within ±25% of the average value of the size, and 95% or more of the first domains has a nearest neighbor distance within ±25% of the average value of the nearest neighbor distance.Type: GrantFiled: July 6, 2016Date of Patent: June 23, 2020Assignees: Sumitomo Electric Industries, Ltd., Mimsi Materials ABInventors: Yoshiharu Utsumi, Paer Christoffer Arumskog, Keiichi Tsuda, Konstantinos Sarakinos, Daniel Gunnar Magnfaelt
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Patent number: 10471523Abstract: It is an object to provide a rotating tool having an excellent wear resistance. The rotating tool includes: a base member including a cutting edge portion and a flute portion; and a coating film that coats a surface of the base member, a ratio B/A of a film thickness B of the coating film coating a surface of the flute portion to a film thickness A of the coating film coating a surface of the cutting edge portion being not less than 0.8.Type: GrantFiled: February 15, 2016Date of Patent: November 12, 2019Assignee: Sumitomo Electric Industries, Ltd.Inventors: Paer Christoffer Arumskog, Yoshiharu Utsumi
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Publication number: 20190292649Abstract: At least one layer in a coating located on a surface of a substrate is a domain structure layer constituted of two or more domains different in composition and a thin layer located between the domains and being different in composition from each of the domains. The thin layer is located between any one domain and any another domain and in contact therewith. When the size of each of a plurality of first domains present in the domain structure layer is defined as a diameter of a virtual circumcircle in contact with each first domain, the average value of the size of each first domain is not smaller than 1 nm and not greater than 10 nm and a thickness of the thin layer in a direction of thickness of the domain structure layer is not less than 1 atomic layer and not more than 10 atomic layers.Type: ApplicationFiled: December 28, 2016Publication date: September 26, 2019Applicants: Sumitomo Electric Industries, Ltd., MIMSI MATERIALS ABInventors: Yoshiharu Utsumi, Paer Christoffer Arumskog, Keiichi Tsuda, Konstantinos Sarakinos, Sankara Pillay, Daniel Gunnar Magnfaelt
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Publication number: 20180195161Abstract: At least one layer in a coating located on a surface of a substrate is a domain structure layer constituted of two or more domains different in composition. The average value of the size of each of first domains, defined as the diameter of a virtual circumcircle in contact with each first domain, is 1 nm to 10 nm. The average value of the nearest neighbor distance of each first domain, defined as the length of the shortest straight line connecting the center of the circumcircle with the center of another circumcircle adjacent to the circumcircle, is 1 nm to 12 nm. 95% or more of the first domains has a size within ±25% of the average value of the size, and 95% or more of the first domains has a nearest neighbor distance within ±25% of the average value of the nearest neighbor distance.Type: ApplicationFiled: July 6, 2016Publication date: July 12, 2018Inventors: Yoshiharu Utsumi, Paer Christoffer Arumskog, Keiichi Tsuda, Konstantinos Sarakinos, Daniel Gunnar Magnfaelt
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Publication number: 20180029145Abstract: It is an object to provide a rotating tool having an excellent wear resistance. The rotating tool includes: a base member including a cutting edge portion and a flute portion; and a coating film that coats a surface of the base member, a ratio B/A of a film thickness B of the coating film coating a surface of the flute portion to a film thickness A of the coating film coating a surface of the cutting edge portion being not less than 0.8.Type: ApplicationFiled: February 15, 2016Publication date: February 1, 2018Inventors: Paer Christoffer Arumskog, Yoshiharu Utsumi
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Publication number: 20170151625Abstract: A spot friction welding tool is for performing spot friction welding of a first member and a second member by superposing the first member and the second member and pressing the spot friction welding tool against the first member and the second member from the first member side. Each of the first member and the second member is a steel plate having a tensile strength of not lower than 590 MPa. The spot friction welding tool is rotatable around a rotation axis. The spot friction welding tool includes a column having a shoulder at a tip end thereof, and a cylindrical or truncated conical probe protruding from the shoulder in a direction of extension of the rotation axis.Type: ApplicationFiled: June 9, 2015Publication date: June 1, 2017Applicants: Sumitomo Electric Industries, Ltd., Sumitomo Electric Industries, Ltd.Inventors: Yoshiharu Utsumi, Hiroka Aoyama, Keiichi Tsuda
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Publication number: 20170136571Abstract: A spot friction welding tool is for performing spot friction welding of a first member and a second member by superposing the first member and the second member and pressing the spot friction welding tool against the first member and the second member from the first member side. Each of the first member and the second member is a steel plate having a tensile strength of not lower than 270 MPa and not higher than 370 MPa. The spot friction welding tool is rotatable around a rotation axis. The spot friction welding tool includes a column having a shoulder at a tip end thereof, and a cylindrical or truncated conical probe protruding from the shoulder in a direction of extension of the rotation axis.Type: ApplicationFiled: June 9, 2015Publication date: May 18, 2017Inventors: Yoshiharu Utsumi, Hiroka Aoyama, Keiichi Tsuda
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Patent number: 9193007Abstract: A friction stir welding tool (1) of the present invention is used for friction stir welding, and includes: a base material (2); and a coating layer (3) formed on a surface of at least a portion of the base material (2) that is to be caused to contact workpieces during friction stir welding, the coating layer (3) containing cubic WC1-x.Type: GrantFiled: February 25, 2013Date of Patent: November 24, 2015Assignee: Sumitomo Electric Industries, Ltd.Inventors: Yoshiharu Utsumi, Hideki Moriguchi
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Publication number: 20150209896Abstract: A friction stir welding tool of the present invention is used for friction stir welding, and includes: a base material; and a coating layer formed on a surface of at least a portion of the base material that is to be caused to contact workpieces during friction stir welding, the base material being formed of a cemented carbide, and the coating layer containing cubic WC1-x and being formed by electrical discharge machining.Type: ApplicationFiled: April 3, 2015Publication date: July 30, 2015Inventors: Yoshiharu Utsumi, Hideki Moriguchi
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Patent number: 8998062Abstract: There is provided a tool for friction stir welding, in which a coating layer is less likely to peel off from a base material and excellent wear resistance is achieved. The tool for friction stir welding according to the present invention includes a base material (BM) and a coating layer. The BM includes a first hard phase (FP) formed by WC particles, a second hard phase (SP) and a binder phase (BP). The SP is formed by a compound of one or more metals selected from Ti, Zr, Hf, Nb, Ta, Cr, Mo, and W and one or more elements selected from nitrogen, carbon, boron, and oxygen, and is included in the BM at a volume ratio of 3% to 30%. The BP is included in the BM at a volume ratio of 8% to 28%. The FP is higher than the SP in terms of volume ratio.Type: GrantFiled: December 14, 2011Date of Patent: April 7, 2015Assignees: Sumitomo Electric Industries, Ltd., Osaka University, Osaka Municipal Technical Research InstituteInventors: Hideki Moriguchi, Hiroka Aoyama, Yoshiharu Utsumi, Hidetoshi Fujii, Yoshiaki Morisada
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Patent number: 8978957Abstract: There is provided a tool for friction stir welding, which is capable of promoting temperature rise of materials to be joined during joining to achieve friction stir welding in a short time, is excellent in heat insulating property of a coating layer, and is excellent in oxidation resistance and wear resistance. A tool for friction stir welding according to the present invention is a tool for friction stir welding including a base material and a coating layer formed on the base material, wherein the coating layer is formed of one or more layers, and at least one layer of the coating layer has a thermal permeability of 5000 J/s0.5·m2·K or less.Type: GrantFiled: November 25, 2013Date of Patent: March 17, 2015Assignee: Sumitomo Electric Industries, Ltd.Inventors: Hideki Moriguchi, Yoshiharu Utsumi, Hiroka Miyazaki
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Patent number: 8936186Abstract: There is provided a tool for friction stir welding having excellent wear resistance and chipping resistance. The tool for friction stir welding according to the present invention includes a base material, the base material includes a first hard phase, a second hard phase and a binder phase, the first hard phase is formed by WC particles, the second hard phase is formed by a compound of one or more metals selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, and W and one or more elements selected from the group consisting of nitrogen, carbon, boron, and oxygen, or a solid solution of the compound (except for WC), the binder phase is formed by an iron group metal, and the second hard phase is higher than or identical to the first hard phase in terms of volume ratio.Type: GrantFiled: December 14, 2011Date of Patent: January 20, 2015Assignees: Sumitomo Electric Industries, Ltd., Osaka University, Osaka Municipal Technical Research InstituteInventors: Hiroka Aoyama, Hideki Moriguchi, Yoshiharu Utsumi, Hidetoshi Fujii, Yoshiaki Morisada
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Patent number: 8833633Abstract: There is provided a tool for friction stir welding having excellent wear resistance and chipping resistance. The tool for friction stir welding according to the present invention is a tool for friction stir welding used in friction stir welding processing, wherein the tool for friction stir welding includes a base material, the base material includes a first hard phase and a binder phase, and has a thermal conductivity of 45 W/m·K or less, the first hard phase is formed by WC particles, and the binder phase is formed by an iron group metal and is included in the base material at a volume ratio of 8% by volume or more and 28% by volume or less.Type: GrantFiled: December 14, 2011Date of Patent: September 16, 2014Assignees: Sumitomo Electric Industries, Ltd., Osaka University, Osaka Municipal Technical Research InstituteInventors: Hiroka Miyazaki, Hideki Moriguchi, Yoshiharu Utsumi, Hidetoshi Fujii, Yoshiaki Morisada
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Publication number: 20140224859Abstract: A friction stir welding tool of the present invention is used for friction stir welding, and includes: a base material; and a coating layer formed on a surface of at least a portion of the base material that is to be caused to contact workpieces during friction stir welding, the base material being formed of a cemented carbide, and the coating layer containing cubic WC1-x and being formed by electrical discharge machining.Type: ApplicationFiled: February 25, 2013Publication date: August 14, 2014Inventors: Yoshiharu Utsumi, Hideki Moriguchi
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Publication number: 20140124564Abstract: The present invention is directed to a tool for friction stir welding including a base material and a coating layer formed on the base material, wherein the coating layer is formed of two or more layers, and the coating layer as a whole has a thermal permeability of 8000 J/s0.5·m2·K or less, at least one layer of the coating layer includes a hexagonal crystal system and/or an amorphous structure, at least one layer of the coating layer includes a cubic crystal system, and the coating layer has compressive stress.Type: ApplicationFiled: May 11, 2012Publication date: May 8, 2014Applicant: Sumitomo Electric Industries, Ltd.Inventors: Hideki Moriguchi, Yoshiharu Utsumi
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Patent number: 8701964Abstract: There is provided a tool for friction stir welding, which is capable of promoting temperature rise of materials to be joined during joining to achieve friction stir welding in a short time, is excellent in heat insulating property of a coating layer, and is excellent in oxidation resistance and wear resistance. A tool for friction stir welding according to the present invention is a tool for friction stir welding including a base material and a coating layer formed on the base material, wherein the coating layer is formed of one or more layers, and at least one layer of the coating layer has a thermal permeability of 5000 J/s0.5·m2·K or less.Type: GrantFiled: December 13, 2010Date of Patent: April 22, 2014Assignee: Sumitomo Electric Industries, Ltd.Inventors: Hideki Moriguchi, Yoshiharu Utsumi, Hiroka Miyazaki