Patents by Inventor Atsushi Mizuno
Atsushi Mizuno 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: 12265203Abstract: To provide an antireflection member which not only has a low reflectance, but also is enhanced in scratch resistance, and an image display device comprising the antireflection member. An antireflection member 100 comprising a low refractive index layer 130 on a transparent substrate 110, in which the low refractive index layer 130 includes a binder resin and silica particles 132 and 134, a ratio of Si element attributed to the silica particles, obtained by analysis of a surface region of the low refractive index layer 130 by X-ray photoelectron spectroscopy, is 10.0 atomic percent or more and 18.0 atomic percent or less and a ratio of C element under the assumption that the ratio of Si element is defined to be 100 atomic percent is 180 atomic percent or more and 500 atomic percent or less.Type: GrantFiled: January 10, 2020Date of Patent: April 1, 2025Assignee: DAI NIPPON PRINTING CO., LTD.Inventors: Tatsuya Kozakai, Tomoyuki Horio, Michiaki Takei, Osamu Watanabe, Keisuke Endou, Takanobu Tadaki, Kio Mizuno, Atsushi Washio, Keita Iwahara, Sho Suzuki
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Patent number: 10493394Abstract: Provided is a porous material which is not easily damaged even when being exposed to a high temperature in a low oxygen atmosphere, and has heat resistance improved. A porous material includes aggregates formed of a nonoxide containing silicon and a binding material formed of an oxide ceramic binding the aggregates to each other while keeping a plurality of pores. The porous material has a phase containing oxygen on a surface of the aggregates including a boundary surface with the binding material. In the porous material, a content ratio of oxygen in the aggregates is preferably from 2 to 25% by mass relative to the mass of the aggregates.Type: GrantFiled: March 24, 2017Date of Patent: December 3, 2019Assignee: NGK Insulators, Ltd.Inventors: Atsushi Mizuno, Ryuta Kouno, Shuichi Ichikawa
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Publication number: 20170282108Abstract: Provided is a porous material which is not easily damaged even when being exposed to a high temperature in a low oxygen atmosphere, and has heat resistance improved. A porous material includes aggregates formed of a nonoxide containing silicon and a binding material formed of an oxide ceramic binding the aggregates to each other while keeping a plurality of pores. The porous material has a phase containing oxygen on a surface of the aggregates including a boundary surface with the binding material. In the porous material, a content ratio of oxygen in the aggregates is preferably from 2 to 25% by mass relative to the mass of the aggregates.Type: ApplicationFiled: March 24, 2017Publication date: October 5, 2017Applicant: NGK INSULATORS, LTD.Inventors: Atsushi MIZUNO, Ryuta KOUNO, Shuichi ICHIKAWA
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Patent number: 9777343Abstract: The present invention is steel for surface hardening for machine structural use which contains, by mass %, C: 0.3 to 0.6%, Si: 0.02 to 2.0%, Mn: 0.35 to less than 1.5%, and Al: 0.01 to 0.5%, is restricted to B: less than 0.0003%, S: 0.0001 to 0.021%, N: 0.003 to 0.0055%, P: 0.0001 to 0.03%, and O: 0.0001 to 0.0050%, has a ratio Mn/S of Mn and S satisfying 70 to 30,000, has a balance of Fe and unavoidable impurities, and, when nitrided, then induction hardened, has a surface hardenability of a Vicker's hardness when tempered at 300° C. of 650 or more.Type: GrantFiled: April 14, 2014Date of Patent: October 3, 2017Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Atsushi Mizuno, Masayuki Hashimura, Kei Miyanishi, Shuji Kozawa
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Patent number: 9764990Abstract: A honeycomb structure includes a honeycomb structure body having a partition wall which is constituted of a porous body. The porous body includes a refractory aggregate and a bonding material. The porous body constituting includes the bonding material at a mass proportion of 20 to 35 mass %. In an observation of a cross section of the partition wall with an electron microscope, when observing any given ten visual fields meeting a following condition (1), the number of refractory aggregates meeting a following condition (2) is five pieces or more in all of the ten visual fields. Condition (1): a proportion of an area occupied by the bonding material is 30% or more. Condition (2): the refractory aggregate has a particle diameter of 5 ?m or more, and 60% or more of an outer circumference of the refractory aggregate is surrounded by the bonding material.Type: GrantFiled: January 8, 2015Date of Patent: September 19, 2017Assignee: NGK Insulators, Ltd.Inventors: Shuichi Ichikawa, Atsushi Mizuno, Yukio Miyairi
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Patent number: 9725783Abstract: Steel for machine structure use excellent in tool lifetime in a broad range of cutting speeds regardless of continuous machining, intermittent machining, or other systems and further in various machining environments such as use of a cutting fluid or a dry, semidry, and oxygen enriched environment, having a chemical composition containing, by mass %, C: 0.01 to 1.2%, Si: 0.005 to 3.0%, Mn: 0.05 to 3.0%, P: 0.0001 to 0.2%, S: 0.0001 to 0.35%, N: 0.0005 to 0.035%, and Al: 0.05 to 1.0%, satisfying [Al %]?(27/14)×[N %]?0.05%, and having a balance of Fe and unavoidable impurities and forming an Al2O3 coating on the surface of a cutting tool by machining using a cutting tool coated on the surface contacting the machined material by metal oxides with a value of a standard free energy of formation at 1300° C. of that value of Al2O3 or more, and a machining method of the same.Type: GrantFiled: May 14, 2010Date of Patent: August 8, 2017Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Toshiharu Aiso, Hajime Saitoh, Atsushi Mizuno
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Patent number: 9640804Abstract: A fuel cell (3) includes interconnectors (hereinafter, IC) (12, 13), a cell body (20) disposed between the ICs and including an air electrode (14) and a fuel electrode (15) on both surfaces of an electrolyte (2), and current collecting members (18, 19) disposed between at least one of the electrodes (14, 15) and the ICs. The current collecting members (19) include connector contact portions (19a) in contact with the IC (13), cell body contact portions (19b) in contact with the cell body (20), and connecting portions (19c) that are bent approximately 180 degrees and connect both the contact portions. The connector contact portions include asperities (19e) on outside surfaces of the connector contact portions on the side where the connector contact portions are in contact with the IC 13, and a spacer (58) is disposed between the connector contact portions and the cell body contact portions.Type: GrantFiled: July 25, 2013Date of Patent: May 2, 2017Assignee: NGK SPARK PLUG CO., LTD.Inventors: Nobuyuki Hotta, Ryoji Tanimura, Atsushi Mizuno, Tetsuya Morikawa
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Patent number: 9455453Abstract: A fuel cell (3) includes interconnectors (hereinafter, IC) (12, 13), a cell body (20) disposed between the ICs and including an air electrode (14) and a fuel electrode (15) on both surfaces of an electrolyte (2), and current collecting members (18, 19) disposed between at least one of the electrodes (14, 15) and the ICs. The current collecting members (19) include connector contact portions (19a) in contact with the IC (13), cell body contact portions (19b) in contact with the cell body, and connecting portions (19c) that are bent approximately 180 degrees and connect both the contact portions, the connector contact portions, the cell body contact portions, and the connecting portions being formed in line. The current collecting members (19) include asperities (19e) on inside surfaces oriented inward, and a spacer (58) is disposed between the connector contact portions and the cell body contact portions.Type: GrantFiled: July 25, 2013Date of Patent: September 27, 2016Assignee: NGK SPARK PLUG CO., LTD.Inventors: Nobuyuki Hotta, Ryoji Tanimura, Atsushi Mizuno, Tetsuya Morikawa
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Patent number: 9259721Abstract: There is disclosed a porous material. The porous material contains aggregates, and a bonding material which bonds the aggregates to one another in a state where pores are formed among the aggregates, the bonding material contains crystalline cordierite, the bonding material further contains a rare earth element or a zirconium element, and a ratio of a mass of the bonding material to a total mass of the aggregates and the bonding material is from 12 to 45 mass %. The bonding material preferably contains, in the whole bonding material, 8.0 to 15.0 mass % of MgO, 30.0 to 60.0 mass % of Al2O3, 30.0 to 55.0 mass % of SiO2, and 1.5 to 10.0 mass % of a rare earth oxide or zirconium oxide.Type: GrantFiled: September 5, 2014Date of Patent: February 16, 2016Assignee: NGK Insulators, LtdInventors: Shuichi Ichikawa, Atsushi Mizuno
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Patent number: 9217344Abstract: A honeycomb filter includes a honeycomb structure and plugged portions. Partition walls of the honeycomb structure are made of a partition wall material including a plurality of aggregates containing silicon carbide or silicon nitride as a main component, and a binding material at a content of 15 to 35 mass %. The binding material is made of a material in which mullite particles as reinforcing particles may be dispersed in cordierite. A thermal expansion coefficient of the partition walls at 40 to 800° C. is 4.2×10?6 1/K or less. When a value of a stress applied to the partition wall material at 900° C. is normalized by the maximum value of the stress applied to the partition wall material, a percentage of a plastic deformation displacement in a total displacement at a normalized stress value of 0.9 is in a range of 0.3 to 10%.Type: GrantFiled: October 28, 2013Date of Patent: December 22, 2015Assignee: NGK Insulators, Ltd.Inventors: Atsushi Mizuno, Suguru Kodama, Yasushi Uchida, Takahiro Kondo, Yukio Miyairi
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Patent number: 9156231Abstract: Steel for machine structure use for surface hardening containing, by mass %, C: 0.3 to 0.6%, Si: 0.02 to 2.0%, Mn: 1.5% to 3.0%, W: 0.0025 to 0.5%, Al: 0.001 to 0.5%, N: 0.003 to 0.02%, S: 0.0001 to 0.025%, P: 0.0001 to 0.03%, and O: 0.0001 to 0.0050%, having an Mn/S of 70 to 30000, and having a balance of substantially Fe and unavoidable impurities.Type: GrantFiled: March 18, 2013Date of Patent: October 13, 2015Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Atsushi Mizuno, Masayuki Hashimura, Hajime Saitoh, Shuji Kozawa, Kei Miyanishi
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Publication number: 20150259254Abstract: A honeycomb structure includes a honeycomb structure body having a partition wall which is constituted of a porous body. The porous body includes a refractory aggregate and a bonding material. The porous body constituting includes the bonding material at a mass proportion of 20 to 35 mass %. In an observation of a cross section of the partition wall with an electron microscope, when observing any given ten visual fields meeting a following condition (1), the number of refractory aggregates meeting a following condition (2) is five pieces or more in all of the ten visual fields. Condition (1): a proportion of an area occupied by the bonding material is 30% or more. Condition (2): the refractory aggregate has a particle diameter of 5 ?m or more, and 60% or more of an outer circumference of the refractory aggregate is surrounded by the bonding material.Type: ApplicationFiled: January 8, 2015Publication date: September 17, 2015Inventors: Shuichi ICHIKAWA, Atsushi MIZUNO, Yukio MIYAIRI
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Patent number: 9127336Abstract: Provided is a hot-working steel excellent in machinability and impact value comprising, in mass %, C: 0.06 to 0.85%, Si: 0.01 to 1.5%, Mn: 0.05 to 2.0%, P: 0.005 to 0.2%, S: 0.001 to 0.35%, and Al: 0.06 to 1.0% and N: 0.016% or less, in contents satisfying Al×N×105?96, and a balance of Fe and unavoidable impurities, total volume of AlN precipitates of a circle-equivalent diameter exceeding 200 nm accounting for 20% or less of total volume of all AlN precipitates.Type: GrantFiled: April 17, 2008Date of Patent: September 8, 2015Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATIONInventors: Kei Miyanishi, Masayuki Hashimura, Atsushi Mizuno
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Publication number: 20150214557Abstract: A fuel cell (3) includes interconnectors (hereinafter, IC) (12, 13), a cell body (20) disposed between the ICs and including an air electrode (14) and a fuel electrode (15) on both surfaces of an electrolyte (2), and current collecting members (18, 19) disposed between at least one of the electrodes (14, 15) and the ICs. The current collecting members (19) include connector contact portions (19a) in contact with the IC (13), cell body contact portions (19b) in contact with the cell body (20), and connecting portions (19c) that are bent approximately 180 degrees and connect both the contact portions. The connector contact portions include asperities (19e) on outside surfaces of the connector contact portions on the side where the connector contact portions are in contact with the IC 13, and a spacer (58) is disposed between the connector contact portions and the cell body contact portions.Type: ApplicationFiled: July 25, 2013Publication date: July 30, 2015Applicant: NGK SPARK PLUG CO., LTD.Inventors: Nobuyuki Hotta, Ryoji Tanimura, Atsushi Mizuno, Tetsuya Morikawa
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Publication number: 20150200404Abstract: A fuel cell (3) includes interconnectors (hereinafter, IC) (12, 13), a cell body (20) disposed between the ICs and including an air electrode (14) and a fuel electrode (15) on both surfaces of an electrolyte (2), and current collecting members (18, 19) disposed between at least one of the electrodes (14, 15) and the ICs. The current collecting members (19) include connector contact portions (19a) in contact with the IC (13), cell body contact portions (19b) in contact with the cell body, and connecting portions (19c) that are bent approximately 180 degrees and connect both the contact portions, the connector contact portions, the cell body contact portions, and the connecting portions being formed in line. The current collecting members (19) include asperities (19e) on inside surfaces oriented inward, and a spacer (58) is disposed between the connector contact portions and the cell body contact portions.Type: ApplicationFiled: July 25, 2013Publication date: July 16, 2015Applicant: NGK SPARK PLUG CO., LTD.Inventors: Nobuyuki Hotta, Ryoji Tanimura, Atsushi Mizuno, Tetsuya Morikawa
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Publication number: 20150093540Abstract: There is disclosed a porous material. The porous material contains aggregates, and a bonding material which bonds the aggregates to one another in a state where pores are formed among the aggregates, the bonding material contains crystalline cordierite, the bonding material further contains a rare earth element or a zirconium element, and a ratio of a mass of the bonding material to a total mass of the aggregates and the bonding material is from 12 to 45 mass %. The bonding material preferably contains, in the whole bonding material, 8.0 to 15.0 mass % of MgO, 30.0 to 60.0 mass % of Al2O3, 30.0 to 55.0 mass % of SiO2, and 1.5 to 10.0 mass % of a rare earth oxide or zirconium oxide.Type: ApplicationFiled: September 5, 2014Publication date: April 2, 2015Inventors: Shuichi ICHIKAWA, Atsushi MIZUNO
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Publication number: 20140251507Abstract: The present invention is steel for surface hardening for machine structural use which contains, by mass %, C: 0.3 to 0.6%, Si: 0.02 to 2.0%, Mn: 0.35 to less than 1.5%, and Al: 0.01 to 0.5%, is restricted to B: less than 0.0003%, S: 0.0001 to 0.021%, N: 0.003 to 0.0055%, P: 0.0001 to 0.03%, and 0:0.0001 to 0.0050%, has a ratio Mn/S of Mn and S satisfying 70 to 30,000, has a balance of Fe and unavoidable impurities, and, when nitrided, then induction hardened, has a surface hardenability of a Vicker's hardness when tempered at 300° C. of 650 or more.Type: ApplicationFiled: April 14, 2014Publication date: September 11, 2014Applicant: Nippon Steel & Sumitomo Metal CorporationInventors: Atsushi Mizuno, Masayuki Hashimura, Kei Miyanishi, Shuji Kozawa
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Patent number: 8802005Abstract: The present invention is steel for surface hardening for machine structural use which contains, by mass %, C: 0.3 to 0.6%, Si: 0.02 to 2.0%, Mn: 0.35 to less than 1.5%, and Al: 0.01 to 0.5%, is restricted to B: less than 0.0003%, S: 0.0001 to 0.021%, N: 0.003 to 0.0055%, P: 0.0001 to 0.03%, and O: 0.0001 to 0.0050%, has a ratio Mn/S of Mn and S satisfying 70 to 30,000, has a balance of Fe and unavoidable impurities, and, when nitrided, then induction hardened, has a surface hardenability of a Vicker's hardness when tempered at 300° C. of 650 or more.Type: GrantFiled: January 15, 2010Date of Patent: August 12, 2014Assignee: Nippon Steel & Sumitomo Metal CorporationInventors: Atsushi Mizuno, Masayuki Hashimura, Kei Miyanishi, Shuji Kozawa
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Publication number: 20140116016Abstract: A honeycomb filter includes a honeycomb structure and plugged portions. Partition walls of the honeycomb structure are made of a partition wall material including a plurality of aggregates containing silicon carbide or silicon nitride as a main component, and a binding material at a content of 15 to 35 mass %. The binding material is made of a material in which mullite particles as reinforcing particles may be dispersed in cordierite. A thermal expansion coefficient of the partition walls at 40 to 800° C. is 4.2×10?6 1/K or less. When a value of a stress applied to the partition wall material at 900° C. is normalized by the maximum value of the stress applied to the partition wall material, a percentage of a plastic deformation displacement in a total displacement at a normalized stress value of 0.9 is in a range of 0.3 to 10%.Type: ApplicationFiled: October 28, 2013Publication date: May 1, 2014Applicant: NGK INSULATORS, LTD.Inventors: Atsushi MIZUNO, Suguru KODAMA, Yasushi UCHIDA, Takahiro KONDO, Yukio MIYAIRI
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Publication number: 20130220489Abstract: Steel for machine structure use for surface hardening containing, by mass %, C: 0.3 to 0.6%, Si: 0.02 to 2.0%, Mn: 1.5% to 3.0%, W: 0.0025 to 0.5%, Al: 0.001 to 0.5%, N: 0.003 to 0.02%, S: 0.0001 to 0.025%, P: 0.0001 to 0.03%, and O: 0.0001 to 0.0050%, having an Mn/S of 70 to 30000, and having a balance of substantially Fe and unavoidable impurities.Type: ApplicationFiled: March 18, 2013Publication date: August 29, 2013Inventors: Atsushi Mizuno, Masayuki Hashimura, Hajime Saitoh, Shuji Kozawa, Kei Miyanishi