Patents by Inventor Megumi FUJISAKI
Megumi FUJISAKI 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: 11850837Abstract: There is provided a functional layer including layered double hydroxide. The functional has an average porosity of 1 to 40% and an average pore diameter of 100 nm or less.Type: GrantFiled: December 20, 2018Date of Patent: December 26, 2023Assignee: NGK INSULATORS, LTD.Inventors: Sho Yamamoto, Megumi Fujisaki, Shohei Yokoyama
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Patent number: 11421570Abstract: A particulate filter, including: a pillar-shaped honeycomb structure portion having a plurality of first cells extending from a first end face to a second end face, the first end face being open and the second end face being plugged, and a plurality of second cells extending from the first end face to the second end face, the first end face being plugged and the second end face being open, in which the first cells and the second cells are alternately arranged adjacent to each other with porous partition walls interposed therebetween; and a low thermal conductive layer covering a part or the whole of an outer peripheral side surface of the pillar-shaped honeycomb structure portion, the thermal conductivity in a thickness direction of the low thermal conductive layer being 0.6 W/(m·K) or less.Type: GrantFiled: March 9, 2020Date of Patent: August 23, 2022Assignee: NGK Insulators, Ltd.Inventors: Yukio Miyairi, Takahiro Tomita, Megumi Fujisaki
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Publication number: 20220252540Abstract: A sensor element comprises an element body and a porous protective layer covering a surface of the element body. In this sensor element, the porous protective layer comprises a first layer exposed on a surface of the sensor element and a second layer disposed between the element body and the first layer. The first layer contains ceramic particles and anisotropic ceramics having an aspect ratio of 5 or more and 100 or less, and a part of the first layer is in contact with the element body. Further, a porosity of the second layer is 95 vol % or more.Type: ApplicationFiled: April 29, 2022Publication date: August 11, 2022Applicant: NGK Insulators, Ltd.Inventors: Mika TAKEUCHI, Megumi FUJISAKI, Kosuke UJIHARA, Takahiro TOMITA
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Publication number: 20210341234Abstract: A heat dissipation member dissipates heat generated at a heat source. The heat dissipation member may include a substrate having a porosity ratio of 5 volume % or less; and an inorganic porous layer disposed on a surface of the substrate, wherein the inorganic porous layer may have a porosity ratio ranging from 25 volume % or more to 85 volume % or less and have lower thermal conductivity than the substrate. In this heat dissipation member, 15 mass % or more of constituents of the inorganic porous layer may be alumina.Type: ApplicationFiled: July 7, 2021Publication date: November 4, 2021Applicant: NGK Insulators, Ltd.Inventors: Megumi FUJISAKI, Takahiro TOMITA, Yusuke OSHITA
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Publication number: 20210341413Abstract: A gas sensor has a porous protective layer disposed on a surface of a sensor element. In this gas sensor, the porous protective layer includes ceramic particles and ceramic fibers. Further, the ceramic fibers are present in the porous protective layer over a range from a front surface to a back surface thereof.Type: ApplicationFiled: July 8, 2021Publication date: November 4, 2021Inventors: Megumi FUJISAKI, Mika TAKEUCHI, Takahiro TOMITA
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Publication number: 20210331450Abstract: A composite member may include an inorganic porous layer on a surface of metal. The inorganic porous layer may include ceramic fibers. The inorganic porous layer may be constituted of 15 mass % or more of an alumina constituent and 45 mass % or more of a titania constituent.Type: ApplicationFiled: July 7, 2021Publication date: October 28, 2021Applicant: NGK Insulators, Ltd.Inventors: Megumi FUJISAKI, Takahiro TOMITA, Yusuke OSHITA
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Patent number: 11152668Abstract: Provided is a layered-double-hydroxide-(LDH) containing composite material including a porous substrate and a high density LDH-containing functional layer on and/or in the porous substrate. The LDH-containing composite material of the present invention includes the porous substrate and the functional layer formed on and/or in the porous substrate. The functional layer contains a layered double hydroxide represented by the general formula M2+1?xM3+x(OH)2An?x/n.mH2O (where M2+ represents a divalent cation, M3+ represents a trivalent cation, An? represents an n-valent anion, n represents an integer not less than 1, x represents a value of 0.1 to 0.4, and m represents a value not less than 0) and has water impermeability.Type: GrantFiled: April 10, 2018Date of Patent: October 19, 2021Assignee: NGK Insulators, Ltd.Inventors: Megumi Fujisaki, Naomi Saito, Naohito Yamada, Sho Yamamoto
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Publication number: 20210179496Abstract: A sensor element of a gas sensor includes: an element base which is a ceramic structured body including a detection part of detecting a target measurement gas component; and a protective layer which is a porous layer provided in at least a part of an outermost peripheral portion of the element base, wherein in the protective layer, numerous convex parts each having a size of 1.0 ?m or less and made up of ceramic microparticles with diameters of 10 nm to 1.0 ?m are discretely formed around numerous ceramic coarse grains having diameters of 5.0 ?m to 40 ?m, the respective ceramic coarse grains are connected to each other directly or via the ceramic microparticle, and a degree of porosity of the protective layer is 5% to 50%.Type: ApplicationFiled: February 24, 2021Publication date: June 17, 2021Inventors: Megumi FUJISAKI, Mika TAKEUCHI, Takahiro TOMITA
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Publication number: 20210163372Abstract: A sensor element includes a ceramic layered body having a zirconia layer part and two alumina layer parts provided on both surfaces of the zirconia layer part, respectively, and a plurality of electrodes provided in the ceramic layered body. At least one of the two alumina layer parts contains Ti element, the zirconia layer part has a layer containing Zr element and Ti element in the vicinity of an interface with the at least one alumina layer part, and the layer contains Ti element in an amount from 0.05 to 5.0 mass %.Type: ApplicationFiled: February 10, 2021Publication date: June 3, 2021Applicant: NGK INSULATORS, LTD.Inventors: Kousuke UJIHARA, Megumi FUJISAKI, Takahiro TOMITA
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Publication number: 20210156817Abstract: A sensor element of a gas sensor includes: an element base which is a ceramic structured body including a detection part of detecting a target measurement gas component; an outer protective layer which is a porous layer provided in at least a part of an outermost peripheral portion of the element base; and an inner protective layer which is a porous layer having a degree of porosity of 30% to 85%, which is larger than a degree of porosity of the outer protective layer, inside the outer protective layer, wherein an average fine pore diameter of the inner protective layer is equal to or larger than 0.5 ?m and equal to or smaller than 5.0 ?m.Type: ApplicationFiled: February 5, 2021Publication date: May 27, 2021Inventors: Megumi FUJISAKI, Mika TAKEUCHI, Takahiro TOMITA
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Patent number: 10826056Abstract: An electrode sheet including a multi-walled carbon nanotube including plural graphene layers, each of which has a trioxotriangulene derivative of formula (1) dispersed therein, where X's are hydrogen, a halogen, or a monovalent organic group, and may be the same as or different from each other.Type: GrantFiled: January 12, 2018Date of Patent: November 3, 2020Assignees: KANEKA CORPORATION, NAGOYA ELECTRICAL EDUCATIONAL FOUNDATIONInventors: Ryotaro Tsuji, Megumi Fujisaki, Yasushi Morita
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Publication number: 20200309002Abstract: A particulate filter, including: a pillar-shaped honeycomb structure portion having a plurality of first cells extending from a first end face to a second end face, the first end face being open and the second end face being plugged, and a plurality of second cells extending from the first end face to the second end face, the first end face being plugged and the second end face being open, in which the first cells and the second cells are alternately arranged adjacent to each other with porous partition walls interposed therebetween; and a low thermal conductive layer covering a part or the whole of an outer peripheral side surface of the pillar-shaped honeycomb structure portion, the thermal conductivity in a thickness direction of the low thermal conductive layer being 0.6 W/(m·K) or less.Type: ApplicationFiled: March 9, 2020Publication date: October 1, 2020Applicant: NGK INSULATORS, LTD.Inventors: Yukio Miyairi, Takahiro Tomita, Megumi Fujisaki
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Patent number: 10370250Abstract: Provided is a layered double hydroxide membrane containing a layered double hydroxide represented by the formula: M2+1-xM3+x(OH)2An?x/n.mH2O (where M2+ represents a divalent cation, M3+ represents a trivalent cation, An? represents an n-valent anion, n is an integer of 1 or more, and x is 0.1 to 0.4), the layered double hydroxide membrane having water impermeability. The layered double hydroxide membrane includes a dense layer having water impermeability, and a non-flat surface structure that is rich in voids and/or protrusions and disposed on at least one side of the dense layer. The present invention provides an LDH membrane suitable for use as a solid electrolyte separator for a battery, the LDH membrane including a dense layer having water impermeability, and a specific structure disposed on at least one side of the dense layer and suitable for reducing the interfacial resistance between the LDH membrane and an electrolytic solution.Type: GrantFiled: May 30, 2017Date of Patent: August 6, 2019Assignee: NGK Insulators, Ltd.Inventors: Sho Yamamoto, Megumi Fujisaki, Shohei Yokoyama, Naohito Yamada
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Publication number: 20190123322Abstract: There is provided a functional layer including layered double hydroxide. The functional has an average porosity of 1 to 40% and an average pore diameter of 100 nm or less.Type: ApplicationFiled: December 20, 2018Publication date: April 25, 2019Applicant: NGK INSULATORS, LTD.Inventors: Sho Yamamoto, Megumi Fujisaki, Shohei Yokoyama
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Patent number: 10199624Abstract: Provided is a layered-double-hydroxide-containing composite material including a porous substrate and a functional layer disposed on and/or in the porous substrate, the functional layer containing a layered double hydroxide represented by the formula M2+1-xM3+x(OH)2An?x/n.mH2O, where M2+ represents a divalent cation, M3+ represents a trivalent cation, An? represents an n-valent anion, n is an integer of 1 or more, and x is 0.1 to 0.4, and the functional layer further containing sulfur (S) at the interface between the functional layer and the porous substrate and in the vicinity of the interface. In the LDH-containing composite material of the present invention, the LDH-containing functional layer disposed on and/or in the porous substrate exhibits significantly improved conductivity.Type: GrantFiled: March 24, 2017Date of Patent: February 5, 2019Assignee: NGK Insulators, Ltd.Inventors: Shohei Yokoyama, Megumi Fujisaki
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Publication number: 20180226625Abstract: Provided is a layered-double-hydroxide-(LDH) containing composite material including a porous substrate and a high density LDH-containing functional layer on and/or in the porous substrate. The LDH-containing composite material of the present invention includes the porous substrate and the functional layer formed on and/or in the porous substrate. The functional layer contains a layered double hydroxide represented by the general formula M2+1?xM3+x(OH)2An?x/n.mH2O (where M2+ represents a divalent cation, M3+ represents a trivalent cation, An? represents an n-valent anion, n represents an integer not less than 1, x represents a value of 0.1 to 0.4, and m represents a value not less than 0) and has water impermeability.Type: ApplicationFiled: April 10, 2018Publication date: August 9, 2018Applicant: NGK INSULATORS, LTD.Inventors: Megumi Fujisaki, Naomi Saito, Naohito Yamada, Sho Yamamoto
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Patent number: 10020480Abstract: Provided is a layered-double-hydroxide-(LDH) containing composite material including a porous substrate and a high density LDH-containing functional layer on and/or in the porous substrate. The LDH-containing composite material of the present invention includes the porous substrate and the functional layer formed on and/or in the porous substrate. The functional layer contains a layered double hydroxide represented by the general formula M2+1-xM3+x(OH)2An-x/n.mH2O (where M2+ represents a divalent cation, M3+ represents a trivalent cation, An- represents an n-valent anion, n represents an integer not less than 1, x represents a value of 0.1 to 0.4, and m represents a value not less than 0) and has water impermeability.Type: GrantFiled: January 27, 2016Date of Patent: July 10, 2018Assignee: NGK Insulators, Ltd.Inventors: Megumi Fujisaki, Naomi Saito, Naohito Yamada, Sho Yamamoto
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Publication number: 20180138499Abstract: An electrode sheet including a multi-walled carbon nanotube including plural graphene layers, each of which has a trioxotriangulene derivative of formula (1) dispersed therein, where X's are hydrogen, a halogen, or a monovalent organic group, and may be the same as or different from each other.Type: ApplicationFiled: January 12, 2018Publication date: May 17, 2018Applicants: KANEKA CORPORATION, NAGOYA ELECTRICAL EDUCATIONAL FOUNDATIONInventors: Ryotaro Tsuji, Megumi Fujisaki, Yasushi Morita
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Patent number: 9793529Abstract: Provided is a layered double hydroxide oriented membrane in which layered double hydroxide plate-like particles are highly oriented in the approximately perpendicular direction and which is also suitable for densification. The layered double hydroxide oriented membrane of the present invention is composed of a layered double hydroxide represented by the general formula: M2+1-xM3+x(OH)2An?x/n.mH2O wherein M2+ is a divalent cation, M3+ is a trivalent cation, An? is an anion having a valency of n, n is an integer of 1 or greater, x is 0.1 to 0.4, and m is 0 or greater, wherein when a surface of the oriented membrane is measured by X-ray diffractometry, a peak of a (003) plane is not substantially detected or is detected to be smaller than a peak of a (012) plane.Type: GrantFiled: July 31, 2015Date of Patent: October 17, 2017Assignee: NGK Insulators, Ltd.Inventors: Megumi Fujisaki, Naomi Saito, Naohito Yamada
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Publication number: 20170260048Abstract: Provided is a layered double hydroxide membrane containing a layered double hydroxide represented by the formula: M2+1?xM3+x(OH)2An?x/n.mH2O (where M2+ represents a divalent cation, M3+ represents a trivalent cation, An? represents an n-valent anion, n is an integer of 1 or more, and x is 0.1 to 0.4), the layered double hydroxide membrane having water impermeability. The layered double hydroxide membrane includes a dense layer having water impermeability, and a non-flat surface structure that is rich in voids and/or protrusions and disposed on at least one side of the dense layer. The present invention provides an LDH membrane suitable for use as a solid electrolyte separator for a battery, the LDH membrane including a dense layer having water impermeability, and a specific structure disposed on at least one side of the dense layer and suitable for reducing the interfacial resistance between the LDH membrane and an electrolytic solution.Type: ApplicationFiled: May 30, 2017Publication date: September 14, 2017Applicant: NGK INSULATORS, LTD.Inventors: Sho YAMAMOTO, Megumi Fujisaki, Shohei Yokoyama, Naohito Yamada