Patents by Inventor Minoru Itoh
Minoru Itoh 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: 11591695Abstract: A surface coated member having improved stability and a longer service life is provided. The surface coated member includes a base member and a hard coating formed on a surface thereof. The hard coating is constituted of one or more layers. At least one layer among the layers is a layer including hard particles. The hard particles include a multilayer structure having a first unit layer and a second unit layer being layered alternately. The first unit layer includes a first compound. The second unit layer includes a second compound. The first compound and the second compound are respectively made of one or more kind of element selected from the group consisting of a group 4 element, a group 5 element, a group 6 element of a periodic table, and Al, and one or more kind of element selected from the group consisting of B, C, N, and O.Type: GrantFiled: October 9, 2019Date of Patent: February 28, 2023Assignee: Sumitomo Electric Hardmetal Corp.Inventors: Anongsack Paseuth, Kazuo Yamagata, Susumu Okuno, Hideaki Kanaoka, Hiroyuki Morimoto, Minoru Itoh
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Publication number: 20200040462Abstract: A surface coated member having improved stability and a longer service life is provided. The surface coated member includes a base member and a hard coating formed on a surface thereof. The hard coating is constituted of one or more layers. At least one layer among the layers is a layer including hard particles. The hard particles include a multilayer structure having a first unit layer and a second unit layer being layered alternately. The first unit layer includes a first compound. The second unit layer includes a second compound. The first compound and the second compound are respectively made of one or more kind of element selected from the group consisting of a group 4 element, a group 5 element, a group 6 element of a periodic table, and Al, and one or more kind of element selected from the group consisting of B, C, N, and O.Type: ApplicationFiled: October 9, 2019Publication date: February 6, 2020Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Anongsack Paseuth, Kazuo YAMAGATA, Susumu OKUNO, Hideaki KANAOKA, Hiroyuki MORIMOTO, Minoru ITOH
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Patent number: 9777367Abstract: A surface coated member having improved stability and a longer service life is provided. The surface coated member of the present invention includes a base member and a hard coating formed on a surface thereof. The hard coating is constituted of one or more layers. At least one of the layers is formed by a CVD method and includes a multilayer structure having a first unit layer and a second unit layer being layered alternately. The first unit layer includes a first compound containing Ti and one or more kind of element selected from the group consisting of B, C, N, and O. The second unit layer includes a second compound containing Al and one or more kind of element selected from the group consisting of B, C, N, and O.Type: GrantFiled: November 1, 2013Date of Patent: October 3, 2017Assignee: Sumitomo Electric Hardmetal Corp.Inventors: Anongsack Paseuth, Kazuo Yamagata, Susumu Okuno, Hideaki Kanaoka, Hiroyuki Morimoto, Minoru Itoh
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Patent number: 9243323Abstract: A surface-coated cutting tool of the present invention includes a base material and a coating film formed on the base material. The coating film includes at least one TiB2 layer. The TiB2 layer includes Cl together with TiB2. This surface-coated cutting tool is characterized in that assuming that in the TiB2 layer, a first region represents a region having a thickness of 0.5 ?m from an interface on the base material side, and a second region represents a region having a thickness of 0.5 ?m from an interface on the coating film surface side, an atomic ratio Cl/(Ti+Cl) between Ti and Cl is higher in the first region than in the second region.Type: GrantFiled: June 27, 2013Date of Patent: January 26, 2016Assignee: Sumitomo Electric Hardmetal Corp.Inventors: Anongsack Paseuth, Keiichi Tsuda, Susumu Okuno, Hideaki Kanaoka, Takahiro Ichikawa, Hiroyuki Morimoto, Minoru Itoh
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Patent number: 9216456Abstract: A surface-coated cutting tool of the present invention includes a base material and a coating film formed on the base material. The coating film includes at least one TiB2 layer. The TiB2 layer includes Cl together with TiB2. This surface-coated cutting tool is characterized in that assuming that in the TiB2 layer, a first region represents a region having a thickness of 0.5 ?m from an interface on the base material side, and a second region represents a region having a thickness of 0.5 ?m from an interface on the coating film surface side, an atomic ratio Cl/(Ti+Cl) between Ti and Cl is higher in the second region than in the first region.Type: GrantFiled: June 27, 2013Date of Patent: December 22, 2015Assignee: Sumitomo Electric Hardmetal Corp.Inventors: Anongsack Paseuth, Keiichi Tsuda, Susumu Okuno, Hideaki Kanaoka, Takahiro Ichikawa, Hiroyuki Morimoto, Minoru Itoh
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Publication number: 20150345013Abstract: A surface coated member having improved stability and a longer service life is provided. The surface coated member includes a base member and a hard coating formed on a surface thereof. The hard coating is constituted of one or more layers. At least one layer among the layers is a layer including hard particles. The hard particles include a multilayer structure having a first unit layer and a second unit layer being layered alternately. The first unit layer includes a first compound. The second unit layer includes a second compound. The first compound and the second compound are respectively made of one or more kind of element selected from the group consisting of a group 4 element, a group 5 element, a group 6 element of a periodic table, and Al, and one or more kind of element selected from the group consisting of B, C, N, and O.Type: ApplicationFiled: November 11, 2013Publication date: December 3, 2015Inventors: Anongsack PASEUTH, Kazuo YAMAGATA, Susumu OKUNO, Hideaki KANAOKA, Hiroyuki MORIMOTO, Minoru ITOH
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Publication number: 20150345012Abstract: A surface coated member having improved stability and a longer service life is provided. The surface coated member of the present invention includes a base member and a hard coating formed on a surface thereof. The hard coating is constituted of one or more layers. At least one of the layers is formed by a CVD method and includes a multilayer structure having a first unit layer and a second unit layer being layered alternately. The first unit layer includes a first compound containing Ti and one or more kind of element selected from the group consisting of B, C, N, and O. The second unit layer includes a second compound containing Al and one or more kind of element selected from the group consisting of B, C, N, and O.Type: ApplicationFiled: November 1, 2013Publication date: December 3, 2015Inventors: Anongsack PASEUTH, Kazuo YAMAGATA, Susumu OKUNO, Hideaki KANAOKA, Hiroyuki MORIMOTO, Minoru ITOH
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Publication number: 20150258611Abstract: A surface-coated cutting tool of the present invention includes a base material and a coating film formed on the base material. The coating film includes at least one TiB2 layer. The TiB2 layer includes Cl together with TiB2. This surface-coated cutting tool is characterized in that assuming that in the TiB2 layer, a first region represents a region having a thickness of 0.5 ?m from an interface on the base material side, and a second region represents a region having a thickness of 0.5 ?m from an interface on the coating film surface side, an atomic ratio Cl/(Ti+Cl) between Ti and Cl is higher in the second region than in the first region.Type: ApplicationFiled: June 27, 2013Publication date: September 17, 2015Inventors: Anongsack Paseuth, Keiichi Tsuda, Susumu Okuno, Hideaki Kanaoka, Takahiro Ichikawa, Hiroyuki Morimoto, Minoru Itoh
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Publication number: 20150252469Abstract: A surface-coated cutting tool of the present invention includes a base material and a coating film formed on the base material. The coating film includes at least one TiB2 layer. The TiB2 layer includes Cl together with TiB2. This surface-coated cutting tool is characterized in that assuming that in the TiB2 layer, a first region represents a region having a thickness of 0.5 ?m from an interface on the base material side, and a second region represents a region having a thickness of 0.5 ?m from an interface on the coating film surface side, an atomic ratio Cl/(Ti+Cl) between Ti and Cl is higher in the first region than in the second region.Type: ApplicationFiled: June 27, 2013Publication date: September 10, 2015Inventors: Anongsack Paseuth, Keiichi Tsuda, Susumu Okuno, Hideaki Kanaoka, Takahiro Ichikawa, Hiroyuki Morimoto, Minoru Itoh
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Patent number: 9044811Abstract: A surface coated cutting tool with a high level of both wear resistance and defect resistance in balance is provided. The surface coated cutting tool of the present invention includes a base material, and a coat film formed on the base material. The coat film includes at least one titanium carbonitride layer. The titanium carbonitride layer has a maximum value for an orientational index TC (220) among texture coefficients TC (hkl). When an indentation hardness of a standard block for hardness is Hs and an indentation hardness of the titanium carbonitride layer is Ht, the average value of the relative hardness Ht/Hs for a plurality of times of measurement is greater than or equal to 3. The difference between the maximum value Htmax/Hs and minimum value Htmin/Hs of the relative hardness of the titanium carbonitride layer to the relative hardness Ht/Hs is less than or equal to 0.5.Type: GrantFiled: July 5, 2011Date of Patent: June 2, 2015Assignee: Sumitomo Electric Hardmetal Corp.Inventors: Anongsack Paseuth, Minoru Itoh, Yoshio Okada, Hideaki Kanaoka, Chie Suzuki
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Patent number: 8715838Abstract: Wear resistance and chipping resistance are both highly established for a surface-coated cutting tool. The surface-coated cutting tool of the present invention includes a base material and a coat film formed on the base material. A first coat layer at a chamfer portion has residual stress that exhibits a minimal value at a depth A within 2 ?m from the surface, and that is greater than or equal to ?7 GPa and less than or equal to ?1 GPa.Type: GrantFiled: June 10, 2011Date of Patent: May 6, 2014Assignee: Sumitomo Electric Hardmetal Corp.Inventors: Yoshio Okada, Minoru Itoh, Hideaki Kanaoka, Chie Suzuki, Anongsack Paseuth
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Publication number: 20130152481Abstract: A surface coated cutting tool with a high level of both wear resistance and defect resistance in balance is provided. The surface coated cutting tool of the present invention includes a base material, and a coat film formed on the base material. The coat film includes at least one titanium carbonitride layer. The titanium carbonitride layer has a maximum value for an orientational index TC (220) among texture coefficients TC (hkl). When an indentation hardness of a standard block for hardness is Hs and an indentation hardness of the titanium carbonitride layer is Ht, the average value of the relative hardness Ht/Hs for a plurality of times of measurement is greater than or equal to 3. The difference between the maximum value Htmax/Hs and minimum value Htmin/Hs of the relative hardness of the titanium carbonitride layer to the relative hardness Ht/Hs is less than or equal to 0.5.Type: ApplicationFiled: July 5, 2011Publication date: June 20, 2013Applicant: Sumitomo Electric Hardmetal Corp.Inventors: Anongsack Paseuth, Minoru Itoh, Yoshio Okada, Hideaki Kanaoka, Chie Suzuki
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Patent number: 8465828Abstract: A surface-coated cutting tool having excellent abrasion resistance and defect resistance is provided. The surface-coated cutting tool includes a substrate and a covering layer, wherein the covering layer includes one or two or more sublayers, a thickness T1 of a portion of the covering layer having the smallest thickness in a cutting edge line portion and a thickness T2 of the covering layer at a point 1 mm away from a cutting edge line in a rake face direction in a cross section cut by a particular plane satisfy T1<T2, and a point a on the surface of the covering layer a distance Da away from the cutting edge line in the rake face direction and a point b on the surface of the covering layer a distance Db away from the cutting edge line in a flank face direction satisfy particularly numerical ranges of Da and Db, and in 10% or more of a region E of the covering layer having a thickness in the range of 0.1 T1 to 0.Type: GrantFiled: April 4, 2011Date of Patent: June 18, 2013Assignee: Sumitomo Electric Hardmetal Corp.Inventors: Hideaki Kanaoka, Minoru Itoh, Yoshio Okada, Chie Suzuki, Anongsack Paseuth
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Publication number: 20120282049Abstract: Wear resistance and chipping resistance are both highly established for a surface-coated cutting tool. The surface-coated cutting tool of the present invention includes a base material and a coat film formed on the base material. A first coat layer at a chamfer portion has residual stress that exhibits a minimal value at a depth A within 2 ?m from the surface, and that is greater than or equal to ?7 GPa and less than or equal to ?1 GPa.Type: ApplicationFiled: June 10, 2011Publication date: November 8, 2012Applicant: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Yoshio Okada, Minoru Itoh, Hideaki Kanaoka, Chie Suzuki, Anongsack Paseuth
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Publication number: 20120231227Abstract: A surface-coated cutting tool having excellent abrasion resistance and defect resistance is provided. The surface-coated cutting tool includes a substrate and a covering layer, wherein the covering layer includes one or two or more sublayers, a thickness T1 of a portion of the covering layer having the smallest thickness in a cutting edge line portion and a thickness T2 of the covering layer at a point 1 mm away from a cutting edge line in a rake face direction in a cross section cut by a particular plane satisfy T1<T2, and a point a on the surface of the covering layer a distance Da away from the cutting edge line in the rake face direction and a point b on the surface of the covering layer a distance Db away from the cutting edge line in a flank face direction satisfy particularly numerical ranges of Da and Db, and in 10% or more of a region E of the covering layer having a thickness in the range of 0.1 T1 to 0.Type: ApplicationFiled: April 4, 2011Publication date: September 13, 2012Applicant: Sumitomo Electric Hardmetal Corp.Inventors: Hideaki Kanaoka, Minoru Itoh, Yoshio Okada, Chie Suzuki, Anongsack Paseuth
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Patent number: 8231312Abstract: A surface-coated cutting tool includes a coating layer (108) formed on a substrate (104), wherein assuming that the average thickness of the coating layer (108) on a first surface (106) and a second surface (107) of the substrate (104) is A, a difference between the maximum and minimum thicknesses of the coating layer (108) is larger than 0.04×A. Also, a surface-coated cutting tool includes a coating layer (108) formed on a substrate (104), wherein assuming that the average thickness of the coating layer (108) on a first surface (106) of the substrate (104) is B1, and the average thickness of the coating layer (108) on a second surface (107) of the substrate (104) is B2, a value obtained by dividing an absolute difference value between B1 and B2 by a larger value of B1 and B2 is larger than 0.04.Type: GrantFiled: August 8, 2007Date of Patent: July 31, 2012Assignee: Sumitomo Electric Hardmetal Corp.Inventors: Naoya Omori, Yoshio Okada, Minoru Itoh, Shinya Imamura, Susumu Okuno, Hiroyuki Morimoto, Chikako Kojima
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Patent number: 8137795Abstract: An indexable insert (1) includes a substrate (8) and a coating layer formed on the substrate. The coating layer includes an inner layer and an outer layer. The inner layer is constituted by a layer containing at least one element selected from the group consisting of Group IVa elements, Group Va elements, and Group VIa elements in the periodic table, and Al and Si. The uppermost layer of the inner layer in contact with the outer layer is composed of a compound at least containing Ti and at least one of nitrogen and boron. The outer layer is constituted by an alumina layer or an alumina-containing layer. In a region involved in cutting, the outer layer satisfies B/A?0.9 where A ?m is the average thickness at the flank face (3) side and B ?m is the average thickness at the rake face (2) side.Type: GrantFiled: October 30, 2006Date of Patent: March 20, 2012Assignee: Sumitomo Electric Hardmetal Corp.Inventors: Naoya Omori, Yoshio Okada, Minoru Itoh, Susumu Okuno, Shinya Imamura
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Patent number: 8133576Abstract: A coated cutting insert according to the present invention includes a substrate, a base layer formed on the substrate, and an indicating layer formed on a part of the base layer. The base layer exhibits a color different from that of the indicating layer. The indicating layer is formed on the base layer, in at least a part of a surface including a cutting-edge portion and a rake face except for a flank face. When a surface relative roughness Ra of a breaker recess portion or a land portion of the rake face is set to A?m and a surface relative roughness Ra of the flank face is set to B?m, relation of B/A?1 is established.Type: GrantFiled: November 25, 2005Date of Patent: March 13, 2012Assignee: Sumitomo Electric Hardmetal Corp.Inventors: Naoya Omori, Yoshio Okada, Minoru Itoh, Norihiro Takanashi, Shinya Imamura, Susumu Okuno
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Patent number: 8097332Abstract: An indexable cutting insert (1) includes a base (8) and a coating layer, wherein the coating layer includes an inner sublayer and an outer sublayer, each of subsublayer constituting the inner sublayer is composed of a compound containing at least one element selected from the group consisting of Group IVa elements, Group Va elements, Group VIa elements in the periodic table, Al, and Si, the outer sublayer is an alumina sublayer or a sublayer containing aluminum, and in portions of the outer sublayer participating in cutting, when an average thickness on the flank face (3) side is represented by A ?m and an average thickness on the rake face (2) side is represented by B ?m, A/B?0.95.Type: GrantFiled: December 26, 2006Date of Patent: January 17, 2012Assignee: Sumitomo Electric Hardmetal Corp.Inventors: Naoya Omori, Yoshio Okada, Minoru Itoh, Susumu Okuno, Shinya Imamura
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Patent number: 8012611Abstract: The present invention relates to a surface-coated cutting tool comprising a substrate and a coating formed on the substrate, the coating includes a first coating of TiCN and a second coating of ?-type Al2O3, the first coating is located between the substrate and the aforementioned second coating, and the second coating has compressive stress S1 in an area A1 spreading from an insert ridge portion in the direction of a rake face and the direction of a flank face with distances of at least 0.5 mm respectively and has tensile stress S2 in an area A2 other than this area A1, while compressive stress S1 and tensile stress S2 are defined by the following expression (I): 400 MPa?|S1?S2|?3500 Mpa ??(I).Type: GrantFiled: October 24, 2005Date of Patent: September 6, 2011Assignee: Sumitomo Electric Hardmetal Corp.Inventors: Yoshio Okada, Naoya Omori, Minoru Itoh, Norihiro Takanashi, Shinya Imamura, Susumu Okuno