Patents Assigned to NGK Insulators
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Patent number: 10393449Abstract: A heat storage member including a substrate containing a SiC sintered body as a principal ingredient and a heat storage material configured to store and radiate heat by a reversible chemical reaction with a reaction medium or a heat storage material configured to store and radiate heat by physical adsorption to a reaction medium and physical desorption from a reaction medium. The substrate has a three-dimensional network structure including a skeleton having porosity of 1% or less. A void ratio of a void formed in the three-dimensional network structure of the substrate is ranging from 30 to 95%. The heat storage material is disposed at least in a part of a surface of the void in the three-dimensional network structure of the substrate.Type: GrantFiled: March 24, 2017Date of Patent: August 27, 2019Assignees: NGK Insulators, Ltd., NGK Adrec Co., Ltd., Tokyo Institute of TechnologyInventors: Shinichi Miwa, Toshiharu Kinoshita, Iori Himoto, Yukitaka Kato, Jun Kariya
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Patent number: 10393931Abstract: A grating device includes an optical material layer; a channel type optical waveguide region provided in the optical material layer; extension regions provided on the outsides of the channel type optical waveguide region, respectively; a Bragg grating provided in the channel type optical waveguide region; and periodic microstructures provided in the extension regions, respectively. The periodic microstructures are provided in 50 percent or larger of a total of areas of the extension regions.Type: GrantFiled: February 17, 2017Date of Patent: August 27, 2019Assignee: NGK Insulators, Ltd.Inventors: Keiichiro Asai, Shoichiro Yamaguchi, Jungo Kondo, Toshihiro Tomita
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Patent number: 10392310Abstract: The porous plate-shaped filler aggregate includes a plurality of the porous plate-shaped fillers. The porous plate-shaped fillers have a uniform plate shape with an aspect ratio of 3 or more, a minimum length of 0.1 to 50 ?m, a porosity of 20 to 99%, and the deviation of the maximum length among a plurality of the porous plate-shaped fillers, which is obtained by the following formula, is 10% or less. Deviation of the maximum length (%)=standard deviation of the maximum length/average value of the maximum length×100 (Here, ‘maximum length’ is the longest length when the porous plate-shaped fillers are held between a pair of parallel planes.Type: GrantFiled: August 8, 2016Date of Patent: August 27, 2019Assignee: NGK Insulators, Ltd.Inventors: Akinobu Oribe, Hiroharu Kobayashi, Takahiro Tomita, Shinsaku Maeda, Yasutaka Awakura
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Patent number: 10391454Abstract: A monolithic separation membrane structure comprises a porous monolithic substrate and a separation membrane. The monolithic substrate includes a first end surface, a second end surface and a plurality of through-holes respectively passing from the first end surface to the second end surface. The separation membrane is formed on an inner surface of the respective plurality of through-holes. The surface roughness Ra of the separation membrane is no more than 1 micrometer and the thickness of the separation membrane is no more than 5 micrometers.Type: GrantFiled: September 9, 2016Date of Patent: August 27, 2019Assignee: NGK Insulators, Ltd.Inventors: Makoto Miyahara, Makiko Ichikawa, Hideyuki Suzuki
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Patent number: 10388560Abstract: A shaft-end mounting structure according to the present invention is a structure to mount an end of a hollow ceramic shaft 20 in a gastight manner on a circumference of a through hole 104 in a base plate 102 of a chamber 100, the shaft 20 being integrated with a ceramic plate 12 on which a wafer is to be placed. A ring member 26 is connected in a gastight manner to an end face of the shaft 20 with a metal layer 28 provided therebetween, the member 26 being composed of a metal material or a metal-ceramic composite material. Bolts 32 extend through the base plate 102 and a metal seal 30 and fasten the member 26 so as to draw the member 26 toward the base plate 102 while the member 26 is placed on the circumference of the through hole 104 with the seal 30 provided therebetween.Type: GrantFiled: February 28, 2017Date of Patent: August 20, 2019Assignee: NGK Insulators, Ltd.Inventor: Hiroshi Takebayashi
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Patent number: 10384170Abstract: A method of manufacturing a separation membrane structure comprising a step of forming a first to nth zeolite membranes on a surface of a porous substrate by “n” repetitions (wherein n is an integer greater than or equal to 2) of formation of a zeolite membrane by a method of hydrothermal synthesis. The following formula (1) is established in relation to the step of forming the first to the nth zeolite membranes. (Formula 1) N1/N0+0.1?T2˜n/T1?2N1/N0+2 (Wherein, N1 denotes a permeation rate of a predetermined gas in the substrate after formation of the first zeolite membrane, N0 denotes a permeation rate of a predetermined gas in the substrate before formation of the first zeolite membrane, T1 is a time required for formation of the first zeolite membrane, and T2˜n is a total time required for formation of the second to the nth zeolite membranes.Type: GrantFiled: March 21, 2017Date of Patent: August 20, 2019Assignee: NGK Insulators, Ltd.Inventors: Ryujiro Nagasaka, Shinji Nakamura
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Patent number: 10376976Abstract: An electrode for electrical discharge machining which makes it possible to form slits of a honeycomb structure forming die so that a slit width on a front surface side is smaller than a slit width on a back hole side is provided. The electrode for electrical discharge machining includes: plural plate-shaped discharge portions with a thickness that is gradually increased toward tips thereof; and a plate-shaped support portion to which end portions of the plural discharge portions on a side opposite to the tips are connected, wherein a difference between a thickness of the tip; and a thickness of the end portion on the side opposite to the tip ranges from 5 ?m to 500 ?m in the discharge portion.Type: GrantFiled: October 23, 2015Date of Patent: August 13, 2019Assignee: NGK Insulators, Ltd.Inventors: Takuya Yamada, Takayuki Onizuka, Hirotaka Henmi
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Patent number: 10381689Abstract: Provided is a highly reliable nickel-zinc battery including a separator exhibiting hydroxide ion conductivity and water impermeability.Type: GrantFiled: June 9, 2016Date of Patent: August 13, 2019Assignee: NGK Insulators, Ltd.Inventors: Hiroshi Hayashi, Naohito Yamada, Kenshin Kitoh
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Patent number: 10369545Abstract: A honeycomb structure includes a honeycomb structure body including porous partition walls defining a plurality of cells serving as fluid passages extending from an inflow end face to an outflow end face. The partition walls have a porosity of 45 to 65%; the open frontal area of the pores having an equivalent circle diameter of 10 ?m or more, of the pores open on the surface of each partition wall, is 20 to 50%; the pore density of the pores having an equivalent circle diameter of 10 ?m or more is 200 to 1,000 pores/mm2; the median opening diameter of the pores having an equivalent circle diameter of 10 ?m or more is 40 to 60 ?m; the circularity of the pores having an equivalent circle diameter of 10 ?m or more is 1.8 to 4.0; and the partition walls have a wet area of 16,500 ?m2 or more.Type: GrantFiled: March 16, 2017Date of Patent: August 6, 2019Assignee: NGK Insulators, Ltd.Inventors: Hirotaka Yamamoto, Yudai Kurimoto
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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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Patent number: 10371460Abstract: A heat storage member including: a substrate containing a SiC sintered body as a principal ingredient; a coating layer disposed at least to a part of surface of the substrate; and a heat storage material disposed at least to a part of a surface of the coating layer and configured to store and radiate heat by a reversible chemical reaction with a reaction medium or a heat storage material configured to store and radiate heat by physical adsorption to a reaction medium and by physical desorption from a reaction medium. A softening point of the coating layer is a temperature at 1000° C. or less.Type: GrantFiled: March 24, 2017Date of Patent: August 6, 2019Assignees: NGK Insulators, Ltd., NGK Adrec Co., Ltd.Inventors: Shinichi Miwa, Toshiharu Kinoshita, Iori Himoto
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Patent number: 10365201Abstract: A CPU of an analysis apparatus performs a fluid analysis and derives transient distribution information that represents an accumulation distribution of a particulate layer on an inflow-side inner circumferential surface of a honeycomb structure at a time point after a short time interval ?t (step S130). The CPU then repeatedly performs a fluid analysis by taking into account the transient distribution information derived previous time to repeatedly derive transient distribution information (steps S130 to S150) and then derives post-transient-analysis distribution information that represents the accumulation distribution of the particulate layer at a later time point (step S160).Type: GrantFiled: September 7, 2016Date of Patent: July 30, 2019Assignee: NGK Insulators, Ltd.Inventors: Yukio Miyairi, Satoshi Sakashita, Kazuya Mori, Naoki Yoshida, Shingo Sokawa, Kenji Suzuki
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Patent number: 10359236Abstract: The “heat storage material storage container” comprises “a main body having a longitudinal direction and including a plurality of flow channels therein, the flow channels extending parallel to each other in the longitudinal direction and separated from each other by porous walls” and “a heat storage material contained in only one or some of the plurality of flow channels.” The plurality of flow channels include “a plurality of first flow channels each having an open end on a first side in the longitudinal direction and a closed end on a second side in the longitudinal direction” and “a plurality of second flow channels each having open ends on both the first side and the second side in the longitudinal direction.” The heat storage material is contained in only the first flow channels.Type: GrantFiled: June 10, 2016Date of Patent: July 23, 2019Assignee: NGK Insulators, Ltd.Inventors: Shigeru Hanzawa, Kouji Ogura
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Patent number: 10350786Abstract: The cutting method of a honeycomb formed body includes an end face cutting step of cutting both end faces of the ceramic honeycomb formed body before fired, by use of blade type rough-cutting grinding wheels in which coarse abrasive grain layers are formed; a honeycomb formed body rotating step of rotating the honeycomb formed body round a rotation axis which is a central axis perpendicular to the end faces of the honeycomb formed body; and an end face finishing step of disposing two finish-polishing grinding wheels via a predetermined distance so that finishing abrasive grain layers formed in the finish-polishing grinding wheels face each other, rotating the finish-polishing grinding wheels round a rotary shaft which is a central shaft of the finish-polishing grinding wheels, and moving the honeycomb formed body to pass the honeycomb formed body between the two finish-polishing grinding wheels, thereby finish-polishing cut surfaces which are cut.Type: GrantFiled: March 17, 2017Date of Patent: July 16, 2019Assignee: NGK Insulators, Ltd.Inventors: Nobuyuki Umetsu, Takuya Yamada
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Patent number: 10343300Abstract: A method for manufacturing a porous body includes a structure forming step that is repeatedly performed a plurality of times and includes: a pore-forming material placing step of placing a pore-forming material 50 for forming pores in the porous body; an aggregate placing step of placing aggregate particles 51 which are part of raw materials of the porous body; a binder placing step of placing binder particles 52 which are part of the raw materials of the porous body; and a binding step of heat-fusing at least part of the placed binder particles 52 to bind aggregate particles 51 together.Type: GrantFiled: September 8, 2016Date of Patent: July 9, 2019Assignee: NGK Insulators, Ltd.Inventors: Satoshi Sakashita, Masayuki Uchida
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Patent number: 10343960Abstract: A separation apparatus 10 includes a pretreatment section 20 that subjects a target fluid containing an olefin compound to at least one or more of a treatment for reducing an acetylene-based compound, a treatment for reducing a sulfur compound, and a treatment for reducing a fine particle component. In the pretreatment section 20, one or more treatments selected from a hydrotreating and an adsorption treatment with an adsorbent may be performed as the treatment for reducing the acetylene-based compound, one or more treatments selected from a washing and absorption treatment, an adsorption treatment with an adsorbent, and a hydrodesulfurization treatment may be performed as the treatment for reducing the sulfur compound, and one or more treatments selected from a liquid absorption treatment, a collection treatment, or a filtration treatment with a filter may be performed as the treatment for reducing the fine particle component.Type: GrantFiled: March 20, 2017Date of Patent: July 9, 2019Assignee: NGK Insulators, Ltd.Inventor: Kenichi Noda
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Patent number: 10344210Abstract: A luminescent substance particle including BaSnO3 having a perovskite-type structure, wherein the luminescent substance particle contains one of 0.07% by mass or less of Fe (iron), 0.005% by mass or less of Cr (chromium) and 0.02% by mass or less of Ni (nickel). A wavelength conversion film including the luminescent substance particle for converting a light in an ultraviolet region to a light in an infrared region. A wavelength conversion device including a substrate and the wavelength conversion film formed on the substrate.Type: GrantFiled: July 26, 2017Date of Patent: July 9, 2019Assignee: NGK Insulators, Ltd.Inventor: Tatsuya Hishiki
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Patent number: 10343100Abstract: A plugged honeycomb structure includes a honeycomb structure body, and a plurality of plugging portions, the honeycomb structure body further includes pass-through hole portions each of which is formed in at least a part of a partition wall intersection portion in which the partition walls intersect in one end face and each of which interconnects a pair of cells facing each other at a position corresponding to the partition wall intersection portion to enable pass-through of a fluid, and a value obtained by dividing a diameter of a first virtual inscribed circle inscribed at a position of a minimum hole width of the pass-through hole portion by a diameter of a second virtual inscribed circle inscribed at a position of a minimum plugging width between the plugging portions facing each other is in a range of 0.05 to 0.74.Type: GrantFiled: February 7, 2017Date of Patent: July 9, 2019Assignee: NGK Insulators, Ltd.Inventor: Takayuki Ogata
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Patent number: 10343928Abstract: 96 parts by mass of a ?-alumina powder, 4 parts by mass of a an AlF3 powder, and 0.17 parts by mass of an ?-alumina powder as a seed crystal were mixed by a pot mill. The purities of each raw material were evaluated, and it was found that the mass ratio of each impurity element other than Al, O, F, H, C, and S was 10 ppm or less. In a high-purity alumina-made sagger having a purity of 99.9 percent by mass, 300 g of the obtained mixed powder was received, and after a high-purity alumina-made lid having a purity of 99.9 percent by mass was placed on the sagger, a heat treatment was perforated at 900° C. for 3 hours in an electric furnace in an air flow atmosphere, so that an alumina powder was obtained. The value of AlF3 mass/container volume was 0.016 g/cm3.Type: GrantFiled: March 1, 2017Date of Patent: July 9, 2019Assignee: NGK Insulators, Ltd.Inventors: Morimichi Watanabe, Hiroshi Fukui, Kei Sato, Tsutomu Nanataki
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Publication number: 20190204031Abstract: A heat exchanging member includes: a pillar shape honeycomb structure having an outer peripheral wall and partition walls extending through the honeycomb structure from a first end face to a second end face to define a plurality of cells forming a through channel of a first fluid, and a covering member for covering the outer peripheral wall of the honeycomb structure. In a cross section of the honeycomb structure perpendicular to a flow direction of the first fluid, the partition walls includes: a plurality of first partition walls extending in a radial direction from the side of a center portion of the cross section; and a plurality of second partition walls extending in a circumferential direction, and a number of the first partition walls on the side of the central portion is less than a number of the first partition walls on the side of the outer peripheral wall.Type: ApplicationFiled: December 21, 2018Publication date: July 4, 2019Applicant: NGK Insulators, LTD.Inventors: Tatsuo KAWAGUCHI, Daisuke Kimura