Komaki, Japan
Komaki, Japan

NGK Insulators, Ltd. is a Japanese ceramics company. It primarily produces insulators but also produces other products, especially ceramic products. It is listed on the Nikkei 225, which is an index of the Tokyo Stock Exchange. It is also listed in the Osaka Securities Exchange, the Nagoya Stock Exchange, and the Sapporo Securities Exchange all under listing code 5333. NGK stands for Nippon Gaishi Kaisha . Wikipedia.


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Patent
Ngk Insulators | Date: 2017-01-18

A fuel cell (10) includes an anode (11), a solid electrolyte layer (12), a barrier layer (13), and a cathode (14). The anode (11) includes a transition metal and an oxygen ion conductive material. In the interface region (R) within 3 micrometers from the interface with the solid electrolyte layer (12) of the anode (11) after reduction, the content rate of silicon is less than or equal to 200 ppm, the content rate of phosphorous is less than or equal to 50 ppm, the content rate of chromium is less than or equal to 100 ppm, the content rate of boron is less than or equal to 100 ppm, and the content rate of sulfur is less than or equal to 100 ppm.


Patent
Ngk Insulators | Date: 2017-01-04

An alumina purity of translucent polycrystalline alumina forming a handle substrate is 99.9 percent or higher, and a porosity of the polycrystalline alumina is 0.01% or more and 0.1% or less. A number of pores, each having a size of 0. 5m or larger and included in a surface region on a side of a bonding face of the handle substrate is 0.5 times or less of a number of pores, each having a size of 0.1 m or larger and 0.3 m or smaller and contained in the surface region.


A monolithic separation membrane structure (100) comprises a porous monolithic substrate (200) and a separation membrane (300). The monolithic substrate (200) includes a first end surface (210a), a second end surface (210b) and a plurality of through-holes (210d) respectively passing from the first end surface (210a) to the second end surface (210b). The separation membrane (300) is formed on an inner surface of the respective plurality of through-holes (210d). The surface roughness Ra of the separation membrane (300) is no more than 1 micrometer and the thickness of the separation membrane (300) is no more than 5 micrometers.


The present invention pertains to a fine-particle number measurement device and a fine-particle number measurement method. The number measurement device (10A) has: a housing (12) comprising a ceramic; a charge application means (20) for applying a charge (18) to fine particles (16) in a gas (14) to be measured which was introduced into the housing (12); a first charge collection means (22A) for collecting the charge (18) applied to the fine particles (16); and a number measurement means (24) for measuring the number of fine particles (16) on the basis of the amount of the collected charge (18).


Patent
Ngk Insulators | Date: 2017-01-04

It is provided an insulating substrate including through holes for conductors arranged in the insulating substrate. A thickness of the insulating substrate is 25 to 100 m, and a diameter of the through hole is 20 to 100 m. The insulating substrate includes a main body part and exposed regions exposed to the through holes and is composed an alumina sintered body. A relative density of the alumina sintered body is 99.5 percent or higher. The alumina sintered body has a purity of 99.9 percent or higher, and has an average grain size of 3 to 6 m in said main body part. Alumina grains are plate-shaped in the exposed region and the plate-shaped alumina grains have an average length of 8 to 25 m.


Patent
Ngk Insulators | Date: 2017-03-08

Provided is a separator structure for use in a zinc secondary battery. The separator structure includes a ceramic separator composed of an inorganic solid electrolyte and having hydroxide ion conductivity and water impermeability, and a peripheral member disposed along the periphery of the ceramic separator and composed of at least one of a resin frame and a resin film. The separator structure exhibits water impermeability as a whole. The separator structure of the present invention can reliably separate the positive electrode side from the negative electrode side in a zinc secondary battery, is readily sealed and bonded to a resin battery container, and exhibits significantly improved handleability during the assembly of the battery.


Patent
Ngk Insulators | Date: 2017-02-08

Provided is a honeycomb structure 100 including: a pillar-shaped honeycomb structure body 4 that includes a porous partition wall which defines and forms a plurality of cells 2 formed as fluid flow passages and extending from a first end face as one end face to a second end face as the other end face, and that includes a circumferential wall 3 located at an outer circumference of the honeycomb structure body; and a pair of electrodes 6 and 6 which are disposed on a side surface of the honeycomb structure body 4. Here, an open frontal area of a center part 21 is 0.70 to 0.95 times an open frontal area of an outer circumferential part 22, where the center part 21 is defined as an area from a center of the honeycomb structure body 4 to a position of 10% of a length from the center to the outer circumference in a direction toward the outer circumference in a cross-section orthogonal to an extending direction of the cells 2 of the honeycomb structure body 4, and the outer circumferential part 22 is defined as an area from the outer circumference to a position of 10% of a length from the outer circumference to the center in a direction toward the center in the cross-section. The honeycomb structure is a catalyst carrier and also serves as a heater when a voltage is applied thereto, and is able to raise a temperature thereof to a necessary temperature up to a center part thereof in a short time when a voltage is applied thereto to purify an exhaust gas.


Patent
Ngk Insulators | Date: 2017-01-04

It is provided an insulating substrate including through holes 2for conductors arranged in the insulating substrate. A thickness of the insulating substrate is 25 to 300 m, and a diameter of the through hole is 20 to 100 m. The insulating substrate is composed of an alumina sintered body. A relative density and an average grain size of the alumina sintered body is 99.5 percent or higher and 2 to 50 m, respectively.


There are disclosed porous plate-shaped fillers which are easy to be laminated, a method for producing the porous plate-shaped filler, and a heat insulation film in which a heat insulation effect improves. A porous plate-shaped filler 1 of the present invention is a plate shape having an aspect ratio of 3 or more, a surface shape is one of a round shape, an oval and a round-comer polygonal shape, and its minimum length is from 0.1 to 50 m. Furthermore, a sectional shape is one of an arch shape, an elliptic shape, and a quadrangular shape in which at least a part of corners is rounded. Consequently, it is possible to obtain the heat insulation film in which the porous plate-shaped fillers 1 are easy to be laminated and the heat insulation effect improves.


Patent
Ngk Insulators and NGK Adrec Co. | Date: 2017-04-19

A shelf (10) for thermal processing inludes a board (30) having a flat plate shape, a column (20) having a support part (24) which supports the board (30) from below, and an opposing part (22) which is located above the support part (24) and opposing an upper surface (30a) of the board (30), and a projection portion (40) projecting from one of the upper surface (30a) and a lower surface (30b) of the board (30) disposed between the support part (24) and the opposing part (22), wherein the projection portion (40) is restricted to move along the flat plate shape of the board (30). One of the support part (24) and the opposing part (22) that is located on a side of the one of the upper surface (30a) and the lower surface (30b) opposes a side surface of the projection portion (40), and makes contact with the projection portion (40) to restrict the board (30) from moving relative to the column (20) along the flat plate shape of the board (30).

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