Patents Assigned to Ishifuku Metal Industry Co., Ltd.
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Publication number: 20240001350Abstract: A gold-supported carbon catalyst includes gold fine particles supported on carbon black, wherein the gold fine particles are coordinated by an alkanethiol at a coverage of from 10% to 70%, and wherein the gold fine particles have an average particle diameter of from 1.0 nm to 1.5 nm.Type: ApplicationFiled: November 8, 2021Publication date: January 4, 2024Applicants: ISHIFUKU METAL INDUSTRY CO., LTD., THE DOSHISHAInventors: Naoya AOKI, Yoko SUGAWARA, Minoru INABA, Hideo DAIMON
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Publication number: 20230383381Abstract: Provided is a heat-resistant Ir alloy, which is further improved in Vickers hardness while maintaining satisfactory processability. Specifically, provided is a heat-resistant Ir alloy, including: 5 mass % to 30 mass % of Pt; 0.5 mass % to 5 mass % of Ta; and 0.003 mass % to 0.15 mass % of at least one kind selected from the group consisting of: Sc; Hf; and W, with the balance being Ir.Type: ApplicationFiled: May 5, 2023Publication date: November 30, 2023Applicants: ISHIFUKU METAL INDUSTRY CO., LTD., DENSO CORPORATIONInventors: Kenta TERAI, Shunsuke TAKEYA, Hayato YASUHARA, Akihiro SHIBATA, Ryohei AKIYOSHI, Yuji KAJI
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Patent number: 11773473Abstract: Provided is an Ir alloy which is excellent in high temperature strength while ensuring oxidation wear resistance at high temperature. The Ir alloy consists of: 7 mass % or more, and less than 10 mass % of Rh; 0.5 mass % to 5 mass % of Ta; 0 mass % to 5 mass % of at least one kind of element selected from among Co, Cr, and Ni; and Ir as the balance, wherein a total content of the Ta and the at least one kind of element selected from among Co, Cr, and Ni is 5 mass % or less.Type: GrantFiled: August 26, 2021Date of Patent: October 3, 2023Assignees: ISHIFUKU METAL INDUSTRY CO., LTD., DENSO CORPORATIONInventors: Shunsuke Yokota, Yoshinori Doi, Ryohei Akiyoshi, Ken Hanashi
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Patent number: 11685970Abstract: An iridium alloy includes iridium, platinum, and tantalum. A content of the platinum in the iridium alloy falls within a range from 5 wt % to 30 wt %, and a content of the tantalum in the iridium alloy falls within a range from 0.3 wt % to 5 wt %.Type: GrantFiled: August 18, 2022Date of Patent: June 27, 2023Assignees: DENSO CORPORATION, ISHIFUKU METAL INDUSTRY CO., LTD.Inventors: Satoshi Hara, Nobuo Abe, Kenta Terai, Shunsuke Takeya, Hayato Yasuhara
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Patent number: 11682773Abstract: An electrocatalyst including carbon and a nanosheet supported on the carbon. The nanosheet includes a metal ruthenium nanosheet, and a platinum atomic layer formed on an entire surface of the metal ruthenium nanosheet. The metal ruthenium nanosheet is a monoatomic layer, and the platinum atomic layer is a monoatomic layer or a monoatomic layer laminated body.Type: GrantFiled: March 23, 2021Date of Patent: June 20, 2023Assignees: Shinshu University, ISHIFUKU Metal Industry Co., Ltd.Inventors: Wataru Sugimoto, Dai Mochizuki, Yusuke Ayato, Tomohiro Ohnishi, Daisuke Takimoto
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Patent number: 11505848Abstract: Provided is an Ir alloy, which is further improved in Vickers hardness. Specifically, provided is a heat-resistant Ir alloy, including: 5 mass % to 30 mass % of Rh; 0.5 mass % to 5 mass % of Ta; and 0.003 mass % to 0.15 mass % of at least one kind selected from the group consisting of: Sc; Hf; and W, with the balance being Ir.Type: GrantFiled: November 30, 2021Date of Patent: November 22, 2022Assignees: ISHIFUKU METAL INDUSTRY CO., LTD., DENSO CORPORATIONInventors: Shunsuke Yokota, Kenta Terai, Hayato Yasuhara, Ryohei Akiyoshi, Ken Hanashi, Ikuya Ando
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Patent number: 11486024Abstract: Provided is an Ir alloy wire, which is further improved in oxidation wear resistance while ensuring a Vickers hardness. The Ir alloy wire includes: 5 mass % to 30 mass % of Rh; and 0.5 mass % to 5 mass % of Ta, wherein an average value A for an aspect ratio (crystal grain length/crystal grain width) of a structure of the alloy wire in a range of a depth of 0.05 mm or less from a surface of the alloy wire satisfies 1?A<6.Type: GrantFiled: November 30, 2021Date of Patent: November 1, 2022Assignees: ISHIFUKU METAL INDUSTRY CO., LTD., DENSO CORPORATIONInventors: Shunsuke Yokota, Kenta Terai, Hayato Yasuhara, Ryohei Akiyoshi, Ken Hanashi, Ikuya Ando
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Publication number: 20220282358Abstract: Provided is an Ir alloy which is excellent in high temperature strength while ensuring oxidation wear resistance at high temperature. The Ir alloy consists of: 7 mass % or more, and less than 10 mass % of Rh; 0.5 mass % to 5 mass % of Ta; 0 mass % to 5 mass % of at least one kind of element selected from among Co, Cr, and Ni; and Ir as the balance, wherein a total content of the Ta and the at least one kind of element selected from among Co, Cr, and Ni is 5 mass % or less.Type: ApplicationFiled: August 26, 2021Publication date: September 8, 2022Applicants: ISHIFUKU METAL INDUSTRY CO., LTD., DENSO CORPORATIONInventors: Shunsuke YOKOTA, Yoshinori DOI, Ryohei AKIYOSHI, Ken HANASHI
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Publication number: 20220170135Abstract: Provided is an Ir alloy, which is further improved in Vickers hardness. Specifically, provided is a heat-resistant Ir alloy, including: 5 mass% to 30 mass% of Rh; 0.5 mass% to 5 mass% of Ta; and 0.003 mass% to 0.15 mass% of at least one kind selected from the group consisting of: Sc; Hf; and W, with the balance being Ir.Type: ApplicationFiled: November 30, 2021Publication date: June 2, 2022Applicants: ISHIFUKU METAL INDUSTRY CO., LTD., DENSO CORPORATIONInventors: Shunsuke YOKOTA, Kenta TERAI, Hayato YASUHARA, Ryohei AKIYOSHI, Ken HANASHI, Ikuya ANDO
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Publication number: 20220170136Abstract: Provided is an Ir alloy wire, which is further improved in oxidation wear resistance while ensuring a Vickers hardness. The Ir alloy wire includes: 5 mass % to 30 mass % of Rh; and 0.5 mass % to 5 mass % of Ta, wherein an average value A for an aspect ratio (crystal grain length/crystal grain width) of a structure of the alloy wire in a range of a depth of 0.05 mm or less from a surface of the alloy wire satisfies 1?A<6.Type: ApplicationFiled: November 30, 2021Publication date: June 2, 2022Applicants: ISHIFUKU METAL INDUSTRY CO., LTD., DENSO CORPORATIONInventors: Shunsuke YOKOTA, Kenta TERAI, Hayato YASUHARA, Ryohei AKIYOSHI, Ken HANASHI, Ikuya ANDO
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Patent number: 11131008Abstract: An Ir alloy is excellent in high temperature strength while ensuring oxidation wear resistance at high temperature. The heat-resistant Ir alloy includes: 5 mass % to 30 mass % of Rh; 0.3 mass % to 5 mass % of an element group A made of at least one kind of element selected from among Ta and Re; and 0 mass % to 5 mass % of an element group B made of at least one kind of element selected from among Co, Cr, and Ni, wherein the heat-resistant Ir alloy includes 5 mass % or less of the element group A and the element group B in total, and wherein, when the at least one kind of element in the element group A includes Re, the at least one kind of element in the element group B is Co alone, Cr alone, or two or more kinds selected from Co, Cr, and Ni.Type: GrantFiled: December 20, 2017Date of Patent: September 28, 2021Assignees: ISHIFUKU METAL INDUSTRY CO., LTD., DENSO CORPORATIONInventors: Shunsuke Yokota, Yoshinori Doi, Ryohei Akiyoshi, Ken Hanashi
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Publication number: 20210234177Abstract: An electrocatalyst including carbon and a nanosheet supported on the carbon. The nanosheet includes a metal ruthenium nanosheet, and a platinum atomic layer formed on an entire surface of the metal ruthenium nanosheet. The metal ruthenium nanosheet is a monoatomic layer, and the platinum atomic layer is a monoatomic layer or a monoatomic layer laminated body.Type: ApplicationFiled: March 23, 2021Publication date: July 29, 2021Applicants: Shinshu University, ISHIFUKU Metal Industry Co., Ltd.Inventors: Wataru SUGIMOTO, Dai MOCHIZUKI, Yusuke AYATO, Tomohiro OHNISHI, Daisuke TAKIMOTO
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Patent number: 10985382Abstract: A core-shell structure nanosheet includes a metal ruthenium nanosheet, and a platinum atomic layer provided on a surface of the metal ruthenium nanosheet. An electrocatalyst includes carbon, and the core shell structure nanosheet supported on the carbon. A method for manufacturing an electrocatalyst includes applying a ruthenium oxide nanosheet colloid which comprises a ruthenium oxide nanosheet, on carbon to obtain a carbon-supported ruthenium oxide nanosheet, in which the ruthenium oxide nanosheet is supported on the carbon. The carbon-supported ruthenium oxide nanosheet is reduced to obtain a carbon-supported ruthenium metal nanosheet, in which a ruthenium metal nanosheet is supported on the carbon. A platinum atomic layer is provided on a surface of the metal ruthenium nanosheet to obtain the electrocatalyst.Type: GrantFiled: July 18, 2018Date of Patent: April 20, 2021Assignees: Shinshu University, ISHIFUKU Metal Industry Co., Ltd.Inventors: Wataru Sugimoto, Dai Mochizuki, Yusuke Ayato, Tomohiro Ohnishi, Daisuke Takimoto
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Publication number: 20190338395Abstract: An Ir alloy is excellent in high temperature strength while ensuring oxidation wear resistance at high temperature. The heat-resistant Ir alloy includes: 5 mass % to 30 mass % of Rh; 0.3 mass % to 5 mass % of an element group A made of at least one kind of element selected from among Ta and Re; and 0 mass % to 5 mass % of an element group B made of at least one kind of element selected from among Co, Cr, and Ni, wherein the heat-resistant Ir alloy includes 5 mass % or less of the element group A and the element group B in total, and wherein, when the at least one kind of element in the element group A includes Re, the at least one kind of element in the element group B is Co alone, Cr alone, or two or more kinds selected from Co, Cr, and Ni.Type: ApplicationFiled: December 20, 2017Publication date: November 7, 2019Applicants: ISHIFUKU METAL INDUSTRY CO., LTD., DENSO CORPORATIONInventors: Shunsuke YOKOTA, Yoshinori DOI, Ryohei AKIYOSHI, Ken HANASHI
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Patent number: 10411268Abstract: Provided is an electrode catalyst having enhanced catalytic activity (oxygen reduction reaction (ORR) specific activity). Disclosed is an electrode catalyst containing a catalyst metal particle(s) and a spacer(s) supported on a catalyst support, in which a ratio (dsp/dcat) of an average diameter of the spacer(s) (dsp) with respect to an average diameter of the catalyst metal particle(s) (dcat) is from 3.5 to 10.Type: GrantFiled: May 10, 2017Date of Patent: September 10, 2019Assignees: NISSAN MOTOR CO., LTD., ISHIFUKU METAL INDUSTRY CO., LTD.Inventors: Atsushi Ohma, Kazuki Arihara, Yoshihisa Furuya, Hideo Inoue, Takehito Nishikawa
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Publication number: 20190165382Abstract: Provided is an electrode catalyst having enhanced catalytic activity (oxygen reduction reaction (ORR) specific activity). Disclosed is an electrode catalyst containing a catalyst metal particle(s) and a spacer(s) supported on a catalyst support, in which a ratio (dsp/dcat) of an average diameter of the spacer(s) (dsp) with respect to an average diameter of the catalyst metal particle(s) (dcat) is from 3.5 to 10.Type: ApplicationFiled: May 10, 2017Publication date: May 30, 2019Applicants: NISSAN MOTOR CO., LTD., ISHIFUKU METAL INDUSTRY CO., LTD.Inventors: Atsushi OHMA, Kazuki ARIHARA, Yoshihisa FURUYA, Hideo INOUE, Takehito NISHIKAWA
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Patent number: 9737931Abstract: Provided is a method for producing a platinum group-based alloy capable of producing a sound molten ingot of a platinum group-based alloy in a large amount.Type: GrantFiled: March 27, 2015Date of Patent: August 22, 2017Assignee: ISHIFUKU METAL INDUSTRY CO., LTD.Inventors: Yoshinori Doi, Daisuke Kon
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Patent number: 9184570Abstract: A spark plug has a center electrode and an earth electrode. The center electrode is faced to the earth electrode so that a spark discharging gap is formed between the center electrode and the earth electrode. An electrode chip is formed on at least one of the center electrode and the earth electrode. The electrode chip has a composition containing 40 to 60 mol % of aluminum and iridium as a remainder thereof. In the composition of the electrode chip, it is possible to replace part of the iridium with 1 to 20 mol % of at least one metal selected from nickel, iron, cobalt, platinum and rhodium.Type: GrantFiled: August 19, 2013Date of Patent: November 10, 2015Assignees: DENSO CORPORATION, ISHIFUKU METAL INDUSTRY CO., LTD.Inventors: Yuki Murayama, Nobuo Abe, Yoshinori Doi, Toshiyuki Tomine, Shunsuke Yokota
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Patent number: 9127346Abstract: This invention provides sputtering target materials having high reflectance and excellent heat resistance, which are formed of Ag base alloys formed by adding a specific, minor amount of P to Ag and alloying them.Type: GrantFiled: November 29, 2011Date of Patent: September 8, 2015Assignee: ISHIFUKU METAL INDUSTRY CO., LTD.Inventors: Koichi Hasegawa, Nobuo Ishii
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Patent number: 9077158Abstract: A spark plug for use in an internal combustion engine has a center electrode, an earth electrode, and an electrode chip formed on at least one of the center electrode and the earth electrode. A spark discharge gap is formed between the center electrode and the earth electrode. The electrode chip has a base section, a chromium rich layer formed on at least a part of the base section, and a diffusion layer formed between the base section and the chromium rich layer. The base section contains chromium within a range of 5 to 45 mass %, an element X within a range of 0.5 to 25 mass %, and a remainder composed of tungsten and unavoidable impurity. The chromium rich layer is larger in content of chromium than the base section. The element X contained in the base section is comprised of at least one of molybdenum, silicon, aluminum and lead.Type: GrantFiled: September 30, 2013Date of Patent: July 7, 2015Assignees: DENSO CORPORATION, ISHIFUKU METAL INDUSTRY CO., LTD.Inventors: Yuki Murayama, Nobuo Abe, Yoshinori Doi, Toshiyuki Tomine