Patents by Inventor Takafumi Kimata
Takafumi Kimata 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: 11613470Abstract: A SiC powder containing 70% by mass or more of a ?-SiC, wherein in a volume-based cumulative particle size distribution measured by a laser diffraction method, a D50 is 8 to 35 ?m and a D10 is 5 ?m or more.Type: GrantFiled: May 28, 2020Date of Patent: March 28, 2023Assignee: NGK Insulators, Ltd.Inventors: Takafumi Kimata, Soichiro Aoyagi, Kisuke Yamamoto
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Publication number: 20230016907Abstract: A pillar shaped honeycomb structure includes: an outer peripheral wall; and porous partition walls disposed on an inner side of the outer peripheral wall, the partition walls defining a plurality of cells, each of the cells penetrating from one end face to other end face to form a flow path, wherein at least one cell of the cells has a magnetic substance coated with glass.Type: ApplicationFiled: September 23, 2022Publication date: January 19, 2023Applicant: NGK Insulators, Ltd.Inventors: Kazuya HOSODA, Takafumi KIMATA, Yunie IZUMI, Takuya NAKASHIMA
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Publication number: 20220362704Abstract: A pillar shaped honeycomb structure includes: an outer peripheral wall; and porous partition walls disposed on an inner side of the outer peripheral wall, the partition walls defining a plurality of cells, each of the cells extending from one end face to other end face to form a flow path, wherein the cells include a plurality of wire pieces made of a magnetic substance, the wire pieces being provided apart from each other via spaces or buffer materials in an extending direction of the cells.Type: ApplicationFiled: July 6, 2022Publication date: November 17, 2022Applicant: NGK Insulators, Ltd.Inventors: Kazuya HOSODA, Takafumi KIMATA, Yunie IZUMI
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Publication number: 20220134487Abstract: A joined body includes a junction target, an underlying layer, an electrode part, and a fixed layer. The conductive underlying layer is fixed on a surface of the junction target. The electrode part is fixed on the underlying layer. The conductive fixed layer is fixed on the underlying layer with the electrode part interposed therebetween. Respective porosities of the underlying layer and the fixed layer are each not higher than 10%.Type: ApplicationFiled: October 18, 2021Publication date: May 5, 2022Applicant: NGK INSULATORS, LTD.Inventors: Shinji SUZUKI, Takafumi KIMATA, Takahiro TOMITA
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Publication number: 20210388749Abstract: A pillar shaped honeycomb structure, including: an outer peripheral wall; and a porous partition wall disposed inside the outer peripheral wall, the a porous partition wall defining a plurality of cells, each of the cells extending from one end face to other end face to form a flow path, wherein a surface of the porous partition wall in the cells comprise a collecting layer having an average pore diameter lower than that of the porous partition wall; and wherein magnetic particles having a Curie point of 700° C. or higher are provided either or both between the surfaces of the porous partition wall and the collecting layer, and on the collecting layer.Type: ApplicationFiled: August 30, 2021Publication date: December 16, 2021Applicant: NGK Insulators, Ltd.Inventors: Takafumi KIMATA, Yukio MIYAIRI, Masaaki MASUDA, Kazuya HOSODA
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Publication number: 20210346880Abstract: A pillar shaped honeycomb structure, including: an outer peripheral wall; and a porous partition wall disposed inside the outer peripheral wall, the partition wall defining a plurality of cells, each of the cells extending from one end face to other end face to form a flow path, wherein the plurality of cells include two or more types of magnetic substances in which at least two of a maximum magnetic permeability, a Curie point, and an intrinsic resistance value are different.Type: ApplicationFiled: July 21, 2021Publication date: November 11, 2021Applicant: NGK INSULATORS, LTD.Inventors: Yukio MIYAIRI, Masaaki MASUDA, Kyohei KATO, Kazuya HOSODA, Takafumi KIMATA
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Publication number: 20210324772Abstract: A pillar shaped honeycomb structure, including: an outer peripheral wall; and porous partition walls disposed inside the outer peripheral wall, the partition walls defining a plurality of cells, each of the cells penetrating from one end face to other end face to form a flow path, wherein one or both of the one end face and the other end face includes a groove portion; and wherein at least one annular conductive loop containing a conductive material is embedded in the groove portion.Type: ApplicationFiled: June 28, 2021Publication date: October 21, 2021Applicant: NGK INSULATORS, LTD.Inventors: Yukio MIYAIRI, Masaaki MASUDA, Kyohei KATO, Takafumi KIMATA, Kazuya HOSODA
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Publication number: 20200385275Abstract: A SiC powder containing 70% by mass or more of a ?-SiC, wherein in a volume-based cumulative particle size distribution measured by a laser diffraction method, a D50 is 8 to 35 ?m and a D10 is 5 ?m or more.Type: ApplicationFiled: May 28, 2020Publication date: December 10, 2020Applicant: NGK INSULATORS, LTD.Inventors: Takafumi KIMATA, Soichiro AOYAGI, Kisuke YAMAMOTO
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Patent number: 10632648Abstract: A ceramic formed body extrusion method for forming a ceramic formed body having a wall-shaped or plate-shaped formed portion by using an extrusion die provided with a slit for extrusion of a ceramic formed body from a raw material for forming, the slit including a slit former stage unit located on an upstream side in an extrusion direction in the extrusion and a slit latter stage unit located on a downstream side in the extrusion direction, the slit latter stage unit having a width of three to 27 times a width of the slit former stage unit, and by extruding a raw material containing a first particle having an aspect ratio of two or more and less than 300 such that the raw material passes though the slit former stage unit of the extrusion die and then passes through the slit latter stage unit.Type: GrantFiled: July 30, 2019Date of Patent: April 28, 2020Assignee: NGK Insulators, Ltd.Inventors: Takafumi Kimata, Kenichi Hidaka, Yoshio Kikuchi, Masaki Ishikawa, Kisuke Yamamoto, Kenji Morimoto
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Patent number: 10596722Abstract: A ceramic formed body extrusion method for forming a ceramic formed body having a wall-shaped or plate-shaped formed portion by using an extrusion die provided with a slit for extrusion of a ceramic formed body from a raw material for forming, the slit including a slit former stage unit located on an upstream side in an extrusion direction in the extrusion and a slit latter stage unit located on a downstream side in the extrusion direction, the slit latter stage unit having a width of three to 27 times a width of the slit former stage unit, and by extruding a raw material containing a first particle having an aspect ratio of two or more and less than 300 such that the raw material passes though the slit former stage unit of the extrusion die and then passes through the slit latter stage unit.Type: GrantFiled: July 30, 2019Date of Patent: March 24, 2020Assignee: NGK Insulators, Ltd.Inventors: Takafumi Kimata, Kenichi Hidaka, Yoshio Kikuchi, Masaki Ishikawa, Kisuke Yamamoto, Kenji Morimoto
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Publication number: 20190351578Abstract: A ceramic formed body extrusion method for forming a ceramic formed body having a wall-shaped or plate-shaped formed portion by using an extrusion die provided with a slit for extrusion of a ceramic formed body from a raw material for forming, the slit including a slit former stage unit located on an upstream side in an extrusion direction in the extrusion and a slit latter stage unit located on a downstream side in the extrusion direction, the slit latter stage unit having a width of three to 27 times a width of the slit former stage unit, and by extruding a raw material containing a first particle having an aspect ratio of two or more and less than 300 such that the raw material passes though the slit former stage unit of the extrusion die and then passes through the slit latter stage unit.Type: ApplicationFiled: July 30, 2019Publication date: November 21, 2019Applicant: NGK Insulators, Ltd.Inventors: Takafumi KIMATA, Kenichi HIDAKA, Yoshio KIKUCHI, Masaki ISHIKAWA, Kisuke YAMAMOTO, Kenji MORIMOTO
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Publication number: 20190351577Abstract: A ceramic formed body extrusion method for forming a ceramic formed body having a wall-shaped or plate-shaped formed portion by using an extrusion die provided with a slit for extrusion of a ceramic formed body from a raw material for forming, the slit including a slit former stage unit located on an upstream side in an extrusion direction in the extrusion and a slit latter stage unit located on a downstream side in the extrusion direction, the slit latter stage unit having a width of three to 27 times a width of the slit former stage unit, and by extruding a raw material containing a first particle having an aspect ratio of two or more and less than 300 such that the raw material passes though the slit former stage unit of the extrusion die and then passes through the slit latter stage unit.Type: ApplicationFiled: July 30, 2019Publication date: November 21, 2019Applicant: NGK Insulators, Ltd.Inventors: Takafumi KIMATA, Kenichi HIDAKA, Yoshio KIKUCHI, Masaki ISHIKAWA, Kisuke YAMAMOTO, Kenji MORIMOTO
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Patent number: 10421213Abstract: A ceramic formed body extrusion method for forming a ceramic formed body having a wall-shaped or plate-shaped formed portion by using an extrusion die provided with a slit for extrusion of a ceramic formed body from a raw material for forming, the slit including a slit former stage unit located on an upstream side in an extrusion direction in the extrusion and a slit latter stage unit located on a downstream side in the extrusion direction, the slit latter stage unit having a width of three to 27 times a width of the slit former stage unit, and by extruding a raw material containing a first particle having an aspect ratio of two or more and less than 300 such that the raw material passes though the slit former stage unit of the extrusion die and then passes through the slit latter stage unit.Type: GrantFiled: March 28, 2017Date of Patent: September 24, 2019Assignee: NGK Insulators, Ltd.Inventors: Takafumi Kimata, Kenichi Hidaka, Yoshio Kikuchi, Masaki Ishikawa, Kisuke Yamamoto, Kenji Morimoto
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Patent number: 10252948Abstract: A method for manufacturing a plugged honeycomb structure, includes: a forming raw material preparation step of mixing and kneading a partition wall base material raw material at least including cordierite powder and binder with water to obtain a partition wall base material forming raw material; a forming/drying step of forming the partition wall base material forming raw material to obtain a honeycomb formed body, and drying the honeycomb formed body to obtain a honeycomb dried body; a slurry application step of applying trapping layer forming slurry including a cordierite forming raw material or alumina to a surface of a not-fired partition wall base material of the obtained honeycomb dried body; a firing step of firing the slurry-applied honeycomb dried body; and a plugging step of disposing a plugging portion at open ends of predetermined cells of the slurry-applied honeycomb dried body or of the honeycomb fired body.Type: GrantFiled: March 15, 2016Date of Patent: April 9, 2019Assignee: NGK Insulators, Ltd.Inventors: Yoshio Kikuchi, Takafumi Kimata
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Publication number: 20170282402Abstract: A ceramic formed body extrusion method for forming a ceramic formed body having a wall-shaped or plate-shaped formed portion by using an extrusion die provided with a slit for extrusion of a ceramic formed body from a raw material for forming, the slit including a slit former stage unit located on an upstream side in an extrusion direction in the extrusion and a slit latter stage unit located on a downstream side in the extrusion direction, the slit latter stage unit having a width of three to 27 times a width of the slit former stage unit, and by extruding a raw material containing a first particle having an aspect ratio of two or more and less than 300 such that the raw material passes though the slit former stage unit of the extrusion die and then passes through the slit latter stage unit.Type: ApplicationFiled: March 28, 2017Publication date: October 5, 2017Applicant: NGK INSULATORS, LTD.Inventors: Takafumi KIMATA, Kenichi HIDAKA, Yoshio KIKUCHI, Masaki ISHIKAWA, Kisuke YAMAMOTO, Kenji MORIMOTO
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Patent number: 9506384Abstract: There is disclosed a plugged honeycomb structure. A plugged honeycomb structure includes a pillar-shaped honeycomb structure body having porous partition walls defining a plurality of cells which become through channels for a fluid and extend from a first end face to a second end face, and plugging portions disposed in open ends of predetermined cells in the first end face and open ends of residual cells in the second end face, and the partition walls are constituted of a porous body including ?-Al2O3 as a main phase and further including aluminum titanate and glass.Type: GrantFiled: February 13, 2015Date of Patent: November 29, 2016Assignee: NGK Insulators, Ltd.Inventors: Yoshio Kikuchi, Takafumi Kimata
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Patent number: 9487448Abstract: A honeycomb structure including a pillar-shaped honeycomb structure body having partition walls defining a plurality of cells which become through channels for a fluid and extend from a first end face to a second end face, the partition walls include a porous body having refractory aggregates and a bonding material which bonds the refractory aggregates to each other, the bonding material includes metal Si and an oxide material, porosity of the porous body constituting the partition walls is 25% or more and 70% or less, a ratio of a mass of the bonding material to a mass of the whole porous body is 30 mass % or more and 50 mass % or less, and a ratio of a mass of the oxide material to the mass of the bonding material is 30 mass % or more and 80 mass % or less.Type: GrantFiled: March 10, 2015Date of Patent: November 8, 2016Assignee: NGK Insulators, Ltd.Inventors: Yukio Miyairi, Yoshio Kikuchi, Takafumi Kimata
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Publication number: 20160272547Abstract: A method for manufacturing a plugged honeycomb structure, includes: a forming raw material preparation step of mixing and kneading a partition wall base material raw material at least including cordierite powder and binder with water to obtain a partition wall base material forming raw material; a forming/drying step of forming the partition wall base material forming raw material to obtain a honeycomb formed body, and drying the honeycomb formed body to obtain a honeycomb dried body; a slurry application step of applying trapping layer forming slurry including a cordierite forming raw material or alumina to a surface of a not-fired partition wall base material of the obtained honeycomb dried body; a firing step of firing the slurry-applied honeycomb dried body; and a plugging step of disposing a plugging portion at open ends of predetermined cells of the slurry-applied honeycomb dried body or of the honeycomb fired body.Type: ApplicationFiled: March 15, 2016Publication date: September 22, 2016Inventors: Yoshio KIKUCHI, Takafumi KIMATA
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Publication number: 20150266779Abstract: There is disclosed a honeycomb structure. A honeycomb structure includes a pillar-shaped honeycomb structure body having partition walls defining a plurality of cells which become through channels for a fluid and extend from a first end face to a second end face, the partition walls include a porous body having refractory aggregates and a bonding material which bonds the refractory aggregates to each other, the bonding material includes metal Si and an oxide material, porosity of the porous body constituting the partition walls is 25% or more and 70% or less, a ratio of a mass of the bonding material to a mass of the whole porous body is 30 mass % or more and 50 mass % or less, and a ratio of a mass of the oxide material to the mass of the bonding material is 30 mass % or more and 80 mass % or less.Type: ApplicationFiled: March 10, 2015Publication date: September 24, 2015Inventors: Yukio MIYAIRI, Yoshio KIKUCHI, Takafumi KIMATA
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Publication number: 20150260065Abstract: There is disclosed a plugged honeycomb structure. A plugged honeycomb structure includes a pillar-shaped honeycomb structure body having porous partition walls defining a plurality of cells which become through channels for a fluid and extend from a first end face to a second end face, and plugging portions disposed in open ends of predetermined cells in the first end face and open ends of residual cells in the second end face, and the partition walls are constituted of a porous body including ?-Al2O3 as a main phase and further including aluminum titanate and glass.Type: ApplicationFiled: February 13, 2015Publication date: September 17, 2015Inventors: Yoshio KIKUCHI, Takafumi KIMATA