Patents by Inventor Fumiyoshi Kobayashi
Fumiyoshi Kobayashi 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: 11923270Abstract: According to one embodiment, a semiconductor device includes a semiconductor chip having a first electrode on a first surface, a metal plate, and a first conductive bonding sheet that is disposed between the first surface of the semiconductor chip and the metal plate and bonds the first electrode to the metal plate.Type: GrantFiled: September 2, 2021Date of Patent: March 5, 2024Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage CorporationInventors: Tatsuya Kobayashi, Fumiyoshi Kawashiro, Hisashi Tomita
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Publication number: 20240066605Abstract: A cutting tool including a substrate and a coating film disposed on the substrate, wherein the cutting tool includes: a rake face, a flank face contiguous to the rake face; and a cutting edge region composed of a boundary part between the rake face and the flank face, wherein the coating film includes a TiSiCN layer, the TiSiCN layer has: a first TiSiCN layer positioned in the rake face; and a second TiSiCN layer positioned in the cutting edge region, the first TiSiCN layer has a composition of Ti(1-Xr)SiXrCN, the second TiSiCN layer has a composition of Ti(1-Xe)SiXeCN, and the Xr and the Xe each represent 0.010 or more and 0.100 or less, and satisfy a relationship of Xr?Xe?0.003.Type: ApplicationFiled: August 30, 2022Publication date: February 29, 2024Applicant: Sumitomo Electric Industries, Ltd.Inventors: Fumiyoshi KOBAYASHI, Anongsack PASEUTH, Haruko HARADA
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Patent number: 11813677Abstract: A cutting tool including a substrate and a coating film disposed on the substrate, wherein the cutting tool includes: a rake face; a flank face contiguous to the rake face; and a cutting edge region composed of a boundary part between the rake face and the flank face, wherein the coating film includes a TiSiCN layer, the TiSiCN layer has: a first TiSiCN layer positioned in the rake face; and a second TiSiCN layer positioned in the cutting edge region, the first TiSiCN layer has a composition of Ti(1-Xr)SiXrCN, the second TiSiCN layer has a composition of Ti(1-Xe)SiXeCN, and the Xr and the Xe each represent 0.010 or more and 0.100 or less, and satisfy a relationship of Xe-Xr?0.003.Type: GrantFiled: August 30, 2022Date of Patent: November 14, 2023Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Fumiyoshi Kobayashi, Anongsack Paseuth, Haruko Harada
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Patent number: 11534837Abstract: A cutting tool includes a substrate and a coated film arranged on the substrate. The coated film includes a first layer. The first layer includes a plurality of crystal grains. The crystal grains are composed of AlxTi1-xCyN1-y, wherein x is more than 0.65 and less than 0.95, and y is not less than 0 and less than 0.1. In a first region, the crystal grains have an average aspect ratio of not more than 3.0. In a second region, the crystal grains have an average aspect ratio of more than 3.0 and not more than 10.0. The crystal grains include crystal grains having a cubic crystal structure. The first layer has a ratio of an area occupied by the crystal grains having a cubic crystal structure of not less than 90%. The first layer has a thickness of not less than 2 ?m and not more than 20 ?m.Type: GrantFiled: June 14, 2021Date of Patent: December 27, 2022Assignees: SUMITOMO ELECTRIC HARDMETAL CORP., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Fumiyoshi Kobayashi, Anongsack Paseuth, Yasuki Kido, Kosuke Tominaga
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Publication number: 20220395909Abstract: A cutting tool includes a substrate and a coated film arranged on the substrate. The coated film includes a first layer. The first layer includes a plurality of crystal grains. The crystal grains are composed of AlxTi1?xCyN1?y, wherein x is more than 0.65 and less than 0.95, and y is not less than 0 and less than 0.1. In a first region, the crystal grains have an average aspect ratio of not more than 3.0. In a second region, the crystal grains have an average aspect ratio of more than 3.0 and not more than 10.0. The crystal grains include crystal grains having a cubic crystal structure. The first layer has a ratio of an area occupied by the crystal grains having a cubic crystal structure of not less than 90%. The first layer has a thickness of not less than 2 m and not more than 20 m.Type: ApplicationFiled: June 14, 2021Publication date: December 15, 2022Applicants: Sumitomo Electric Hardmetal Corp., Sumitomo Electric Industries, Ltd.Inventors: Fumiyoshi KOBAYASHI, Anongsack PASEUTH, Yasuki KIDO, Kosuke TOMINAGA
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Publication number: 20220379385Abstract: A cutting tool includes: a substrate; a hard layer provided on the substrate; and a titanium carbonitride layer provided on the hard layer, wherein a thickness of the titanium carbonitride layer is more than or equal to 2 ?m, a hardness of the titanium carbonitride layer at a room temperature is more than or equal to 35 GPa, and a Young's modulus of the titanium carbonitride layer at the room temperature is less than or equal to 650 GPa.Type: ApplicationFiled: June 4, 2020Publication date: December 1, 2022Applicant: Sumitomo Electric Hardmetal Corp.Inventors: Yasuki KIDO, Susumu OKUNO, Fumiyoshi KOBAYASHI, Masahito HIKIJI
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Publication number: 20220331880Abstract: Provided is a cutting tool including a base material and a coating layer provided on the base material, the coating layer including a titanium carbonitride layer provided on the base material, an intermediate layer provided on the titanium carbonitride layer in contact therewith, and an alumina layer provided on the intermediate layer in contact therewith, the intermediate layer being composed of a compound made of titanium, carbon, oxygen, and nitrogen, the intermediate layer having a thickness of more than 1 ?m, when PC1 atomic % represents an atomic ratio of the carbon in an interface between the intermediate layer and the alumina layer, and PC2 atomic % represents an atomic ratio of the carbon at a point A away from the interface by 1 ?m on a side of the intermediate layer, a ratio PC1/PC2 of the PC1 to the PC2 being more than or equal to 1.03.Type: ApplicationFiled: April 10, 2020Publication date: October 20, 2022Applicant: Sumitomo Electric Hardmetal Corp.Inventors: Susumu OKUNO, Yasuki KIDO, Fumiyoshi KOBAYASHI, Anongsack PASEUTH
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Publication number: 20220305565Abstract: Provided is a cutting tool including a base material and a coating layer provided on the base material, the coating layer including a titanium carbonitride layer provided on the base material, an intermediate layer provided on the titanium carbonitride layer in contact therewith, and an alumina layer provided on the intermediate layer in contact therewith, the intermediate layer being composed of a compound made of titanium, carbon, oxygen, and nitrogen, the intermediate layer having a thickness of more than 1 ?m, when PO1 atomic % represents an atomic ratio of the oxygen in an interface between the intermediate layer and the alumina layer, and PO2 atomic % represents an atomic ratio of the oxygen at a point A away from the interface by 1 ?m on a side of the intermediate layer, a ratio PO1/PO2 of the PO1 to the PO2 being more than or equal to 1.03.Type: ApplicationFiled: April 10, 2020Publication date: September 29, 2022Applicant: Sumitomo Electric Hardmetal Corp.Inventors: Susumu OKUNO, Yasuki KIDO, Fumiyoshi KOBAYASHI, Anongsack PASEUTH
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Patent number: 11390942Abstract: A cutting tool comprises a substrate and an AlTiN layer, the AlTiN layer including cubic AlxTi(1-x)N crystal grains, an atomic ratio x of Al in the AlxTi(1-x)N being 0.7 or more and 0.95 or less, the AlTiN layer including a first major surface on a side of a surface of the cutting tool and a second major surface on a side of the substrate, the AlTiN layer including a first region having a distance of 0 nm or more and 100 nm or less from the first major surface, and a second region having a distance of more than 100 nm and 150 nm or less from the first major surface, the first region having a maximum oxygen content ratio of 5 atomic % or more and 30 atomic % or less, the second region having a maximum oxygen content ratio of less than 5 atomic %.Type: GrantFiled: June 2, 2020Date of Patent: July 19, 2022Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Yasuki Kido, Susumu Okuno, Fumiyoshi Kobayashi
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Publication number: 20220193787Abstract: A cutting tool including a rake face and a flank face includes: a substrate; and a coating film disposed on the substrate, wherein the coating film includes an Al2O3 layer, residual stress of the Al2O3 layer has a minimum value Rmin at at least a portion of a region d1 of the rake face, the minimum value Rmin is more than ?0.27 GPa and less than or equal to ?0.1 GPa.Type: ApplicationFiled: May 18, 2020Publication date: June 23, 2022Applicant: Sumitomo Electric Hardmetal Corp.Inventors: Fumiyoshi KOBAYASHI, Susumu OKUNO, Anongsack PASEUTH, Shinya IMAMURA
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Publication number: 20220168819Abstract: A cutting tool including a rake face and a flank face includes: a substrate; and a coating film disposed on the substrate, wherein the coating film includes an Al2O3 layer, residual stress of the Al2O3 layer has a minimum value Rmin at at least a portion of a region f1 in the flank face, the minimum value Rmin is more than or equal to ?0.25 GPa and less than or equal to ?0.1 GPa.Type: ApplicationFiled: May 18, 2020Publication date: June 2, 2022Applicant: Sumitomo Electric Hardmetal Corp.Inventors: Fumiyoshi KOBAYASHI, Susumu OKUNO, Anongsack PASEUTH, Shinya IMAMURA
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Patent number: 11292065Abstract: A cutting tool comprises a substrate and an AlTiN layer, the AlTiN layer including a first major surface and a second major surface, the AlTiN layer including a first region having a distance of 0 nm or more and 30 nm or less from the first major surface and having a maximum oxygen content ratio of more than 0 atomic % and less than 5 atomic %, a second region having a distance of more than 30 nm and 100 nm or less from the first major surface and having a maximum oxygen content ratio of 5 atomic % or more and 30 atomic % or less, and a third region having a distance of more than 100 nm and 150 nm or less from the first major surface and having a maximum oxygen content ratio of more than 0 atomic % and less than 5 atomic %.Type: GrantFiled: June 2, 2020Date of Patent: April 5, 2022Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Yasuki Kido, Susumu Okuno, Fumiyoshi Kobayashi
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Patent number: 11293095Abstract: A cutting tool comprises a substrate and an AlTiN layer, the AlTiN layer including a first major surface and a second major surface, the AlTiN layer including a first region having a distance of 0 nm or more and 30 nm or less from the first major surface and having a maximum oxygen content ratio of 30 atomic % or more, a second region having a distance of more than 30 nm and 100 nm or less from the first major surface and having a maximum oxygen content ratio of 5 atomic % or more and less than 30 atomic %, and a third region having a distance exceeding 100 nm from the first major surface and having a maximum oxygen content ratio of less than 5 atomic %.Type: GrantFiled: June 2, 2020Date of Patent: April 5, 2022Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Yasuki Kido, Susumu Okuno, Fumiyoshi Kobayashi
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Patent number: 11273498Abstract: A cutting tool includes: a substrate; a hard layer provided on the substrate; and a titanium carbonitride layer provided on the hard layer, wherein a thickness of the titanium carbonitride layer is more than or equal to 2 ?m, a hardness of the titanium carbonitride layer at a room temperature is more than or equal to 35 GPa, and a Young's modulus of the titanium carbonitride layer at the room temperature is more than or equal to 800 GPa.Type: GrantFiled: June 4, 2020Date of Patent: March 15, 2022Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Yasuki Kido, Susumu Okuno, Fumiyoshi Kobayashi, Masahito Hikiji
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Publication number: 20220040767Abstract: A cutting tool comprises a substrate and a coating that coats the substrate, the coating including an ?-alumina layer provided on the substrate, the ?-alumina layer including crystal grains of ?-alumina, the ?-alumina layer including a lower portion and an upper portion, the upper portion being occupied in area at a ratio of 50% or more by crystal grains of ?-alumina having a (006) plane with a normal thereto having a direction within ±15° with respect to a direction of the normal to the second interface, the lower portion being occupied in area at a ratio of 50% or more by crystal grains of ?-alumina having a (006) plane with a normal thereto having a direction within ±15° with respect to the direction of the normal to the second interface, the ?-alumina layer having a thickness of 3 ?m or more and 20 ?m or less.Type: ApplicationFiled: December 12, 2019Publication date: February 10, 2022Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Susumu OKUNO, Shinya IMAMURA, Yuki RIKISO, Yasuki KIDO, Fumiyoshi KOBAYASHI
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Publication number: 20220032380Abstract: A cutting tool comprises a substrate and a coating that coats the substrate, the coating including an ?-alumina layer provided on the substrate, the ?-alumina layer including crystal grains of ?-alumina, the ?-alumina layer including a lower portion and an upper portion, the upper portion being occupied in area at a ratio of 50% or more by crystal grains of ?-alumina having a (006) plane with a normal thereto having a direction within ±15° with respect to a direction of the normal to the second interface, the lower portion being occupied in area at a ratio of 50% or more by crystal grains of ?-alumina having a (110) plane with a normal thereto having a direction within ±15° with respect to the direction of the normal to the second interface, the ?-alumina layer having a thickness of 3 ?m or more and 20 ?m or less.Type: ApplicationFiled: December 12, 2019Publication date: February 3, 2022Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Susumu OKUNO, Shinya IMAMURA, Yuki RIKISO, Yasuki KIDO, Fumiyoshi KOBAYASHI
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Patent number: 11207736Abstract: Provided is a cutting tool including a base material and a coating layer provided on the base material, the coating layer including a titanium carbonitride layer provided on the base material, an intermediate layer provided on the titanium carbonitride layer in contact therewith, and an alumina layer provided on the intermediate layer in contact therewith, the intermediate layer being composed of a compound made of titanium, carbon, oxygen, and nitrogen, the intermediate layer having a thickness of more than 1 ?m, when PN1 atomic % represents an atomic ratio of the nitrogen in an interface between the intermediate layer and the alumina layer, and PN2 atomic % represents an atomic ratio of the nitrogen at a point A away from the interface by 1 ?m on a side of the intermediate layer, a ratio PN1/PN2 of the PN1 to the PN2 being more than or equal to 1.03.Type: GrantFiled: April 10, 2020Date of Patent: December 28, 2021Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Susumu Okuno, Yasuki Kido, Fumiyoshi Kobayashi, Anongsack Paseuth
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Publication number: 20210379671Abstract: A cutting tool includes: a substrate; a hard layer provided on the substrate; and a titanium carbonitride layer provided on the hard layer, wherein a thickness of the titanium carbonitride layer is more than or equal to 2 ?m, a hardness of the titanium carbonitride layer at a room temperature is more than or equal to 35 GPa, and a Young's modulus of the titanium carbonitride layer at the room temperature is more than or equal to 800 GPa.Type: ApplicationFiled: June 4, 2020Publication date: December 9, 2021Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Yasuki KIDO, Susumu OKUNO, Fumiyoshi KOBAYASHI, Masahito HIKIJI
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Publication number: 20210370410Abstract: A cutting tool comprises a substrate and an AlTiN layer, the AlTiN layer including a first major surface and a second major surface, the AlTiN layer including a first region having a distance of 0 nm or more and 30 nm or less from the first major surface and having a maximum oxygen content ratio of more than 0 atomic % and less than 5 atomic %, a second region having a distance of more than 30 nm and 100 nm or less from the first major surface and having a maximum oxygen content ratio of 5 atomic % or more and 30 atomic % or less, and a third region having a distance of more than 100 nm and 150 nm or less from the first major surface and having a maximum oxygen content ratio of more than 0 atomic % and less than 5 atomic %.Type: ApplicationFiled: June 2, 2020Publication date: December 2, 2021Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Yasuki KIDO, Susumu OKUNO, Fumiyoshi KOBAYASHI
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Publication number: 20210371974Abstract: A cutting tool comprises a substrate and an AlTiN layer, the AlTiN layer including a first major surface and a second major surface, the AlTiN layer including a first region having a distance of 0 nm or more and 30 nm or less from the first major surface and having a maximum oxygen content ratio of 30 atomic % or more, a second region having a distance of more than 30 nm and 100 nm or less from the first major surface and having a maximum oxygen content ratio of 5 atomic % or more and less than 30 atomic %, and a third region having a distance exceeding 100 nm from the first major surface and having a maximum oxygen content ratio of less than 5 atomic %.Type: ApplicationFiled: June 2, 2020Publication date: December 2, 2021Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Yasuki KIDO, Susumu OKUNO, Fumiyoshi KOBAYASHI