Patents by Inventor Masahito HIKIJI
Masahito HIKIJI 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: 20220402045Abstract: A cutting tool includes: a substrate; and a coating film disposed on the substrate, wherein the coating film includes an ?-Al2O3 layer, the ?-Al2O3 layer includes a plurality of ?-Al2O3 crystal grains, and has a TC (006) of more than 5 in texture coefficient TC (hkl), and a plastic deformation amount hp of the ?-Al2O3 layer at 800° C. is 0 nm or more and 100 nm or less.Type: ApplicationFiled: June 11, 2020Publication date: December 22, 2022Applicant: Sumitomo Electric Hardmetal Corp.Inventors: Yasuki KIDO, Susumu OKUNO, Masahito HIKIJI
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Publication number: 20220402044Abstract: A cutting tool includes: a substrate; and a coating film disposed on the substrate, wherein the coating film includes an ?-Al2O3 layer, the ?-Al2O3 layer includes a plurality of ?-Al2O3 crystal grains, and has a TC(006) of more than 5 in texture coefficient TC(hkl), and an elastic modulus E1 of the ?-Al2O3 layer at a room temperature and an elastic modulus E2 of the ?-Al2O3 layer at 800° C. represent a relation of the following expression B-1: 0<{(E1?E2)/E1}×100<10??Expression B-1.Type: ApplicationFiled: June 11, 2020Publication date: December 22, 2022Applicant: Sumitomo Electric Hardmetal Corp.Inventors: Yasuki KIDO, Susumu OKUNO, Masahito HIKIJI
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Publication number: 20220402043Abstract: A cutting tool includes: a substrate; and a coating film disposed on the substrate, wherein the coating film includes an ?-Al2O3 layer, the ?-Al2O3 layer includes a plurality of ?-Al2O3 crystal grains, and has a TC(006) of more than 5 in texture coefficient TC(hkl), and a hardness H1 of the ?-Al2O3 layer at a room temperature and a hardness H2 of the ?-Al2O3 layer at 800° C. represent a relation of the following expression A-1: 0<{(H1?H2)/H1}×100<60 ??Expression A-1.Type: ApplicationFiled: June 11, 2020Publication date: December 22, 2022Applicant: Sumitomo Electric Hardmetal Corp.Inventors: Yasuki KIDO, Susumu OKUNO, Masahito HIKIJI
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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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Patent number: 11511353Abstract: A cutting tool comprising a base material and a coating arranged on the base material; wherein: the coating comprises an ?-Al2O3 layer composed of a plurality of ?-Al2O3 particles; the average particle diameter a of the ?-Al2O3 particles in a first region of the ?-Al2O3 layer is 0.10 ?m or more and 0.30 ?m or less; the average particle diameter b of the ?-Al2O3 particles in a second region of the ?-Al2O3 layer is 0.30 ?m or more and 0.50 ?m or less; the average particle diameter c of the ?-Al2O3 particles in a third region of the ?-Al2O3 layer is 0.30 ?m or more and 0.50 ?m or less; and the ratio b/a is 1.5 or more and 5.0 or less.Type: GrantFiled: March 22, 2021Date of Patent: November 29, 2022Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Masahito Hikiji, Susumu Okuno, Takato Yamanishi
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Patent number: 11471951Abstract: A cutting tool comprising a base material and a coating arranged on the base material; wherein: the coating comprises an ?-Al2O3 layer composed of a plurality of ?-Al2O3 particles; the average particle diameter a of the ?-Al2O3 particles in a first region of the ?-Al2O3 layer is 0.10 ?m or more and 0.30 ?m or less; the average particle diameter b of the ?-Al2O3 particles in a second region of the ?-Al2O3 layer is 0.30 ?m or more and 0.50 ?m or less; the average particle diameter c of the ?-Al2O3 particles in a third region of the ?-Al2O3 layer is 0.10 ?m or more and 0.30 ?m or less; and the ratio b/a is 1.5 or more and 5.0 or less.Type: GrantFiled: March 22, 2021Date of Patent: October 18, 2022Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Masahito Hikiji, Susumu Okuno, Takato Yamanishi
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Publication number: 20220297199Abstract: A cutting tool comprising a base material and a coating arranged on the base material; wherein: the coating comprises an ?-Al2O3 layer composed of a plurality of ?-Al2O3 particles; the average particle diameter a of the ?-Al2O3 particles in a first region of the ?-Al2O3 layer is 0.10 ?m or more and 0.30 ?m or less; the average particle diameter b of the ?-Al2O3 particles in a second region of the ?-Al2O3 layer is 0.30 ?m or more and 0.50 ?m or less; the average particle diameter c of the ?-Al2O3 particles in a third region of the ?-Al2O3 layer is 0.10 ?m or more and 0.30 ?m or less; and the ratio b/a is 1.5 or more and 5.0 or less.Type: ApplicationFiled: March 22, 2021Publication date: September 22, 2022Applicant: Sumitomo Electric Hardmetal Corp.Inventors: Masahito HIKIJI, Susumu OKUNO, Takato YAMANISHI
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Publication number: 20220297200Abstract: A cutting tool comprising a base material and a coating arranged on the base material; wherein: the coating comprises an ?-Al2O3 layer composed of a plurality of ?-Al2O3 particles; the average particle diameter a of the ?-Al2O3 particles in a first region of the ?-Al2O3 layer is 0.10 ?m or more and 0.30 ?m or less; the average particle diameter b of the ?-Al2O3 particles in a second region of the ?-Al2O3 layer is 0.30 ?m or more and 0.50 ?m or less; the average particle diameter c of the ?-Al2O3 particles in a third region of the ?-Al2O3 layer is 0.30 ?m or more and 0.50 ?m or less; and the ratio b/a is 1.5 or more and 5.0 or less.Type: ApplicationFiled: March 22, 2021Publication date: September 22, 2022Applicant: Sumitomo Electric Hardmetal Corp.Inventors: Masahito HIKIJI, Susumu OKUNO, Takato YAMANISHI
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Patent number: 11426802Abstract: A cutting tool comprising a base material and a coating arranged on the base material; wherein: the coating comprises an ?-Al2O3 layer composed of a plurality of ?-Al2O3 particles; the average particle diameter a of the ?-Al2O3 particles in a first region of the ?-Al2O3 layer is 0.10 ?m or more and 0.30 ?m or less; the average particle diameter b of the ?-Al2O3 particles in a second region of the ?-Al2O3 layer is 0.30 ?m or more and 0.50 ?m or less; the average particle diameter c of the ?-Al2O3 particles in a third region of the ?-Al2O3 layer is 0.10 ?m or more and 0.30 ?m or less; and the ratio b/a is 1.5 or more and 5.0 or less.Type: GrantFiled: March 22, 2021Date of Patent: August 30, 2022Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Masahito Hikiji, Susumu Okuno, Takato Yamanishi
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Patent number: 11407037Abstract: A cutting tool comprising a base material and a coating arranged on the base material; wherein: the coating comprises an ?-Al2O3 layer composed of a plurality of ?-Al2O3 particles; the average particle diameter a of the ?-Al2O3 particles in a first region of the ?-Al2O3 layer is 0.10 ?m or more and 0.30 ?m or less; the average particle diameter b of the ?-Al2O3 particles in a second region of the ?-Al2O3 layer is 0.30 ?m or more and 0.50 ?m or less; the average particle diameter c of the ?-Al2O3 particles in a third region of the ?-Al2O3 layer is 0.50 ?m or more and 1.50 ?m or less; and the ratio b/a is 1.5 or more and 5.0 or less.Type: GrantFiled: March 22, 2021Date of Patent: August 9, 2022Assignee: SUMITOMO ELECTRIC HARDMETAL CORP.Inventors: Masahito Hikiji, Susumu Okuno, Takato Yamanishi
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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: 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