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公开(公告)号：US20250092579A1
公开(公告)日：2025-03-20
申请号：US18964623
申请日：2024-12-01
Inventor： KAZUMA OIKAWA , RYOU KUWABARA
IPC: D01F9/17 , C01B32/184
Abstract: A conductive porous material includes a skeleton structure containing a fibrous carbonaceous material of biological origin, and graphene held by the skeleton structure. A volume resistivity of the conductive porous material measured under pressure of less than or equal to 10 MPa is 1.0×10−3 to 1.0×100 Ω·cm. A biomass degree of the conductive porous material, as measured by accelerator mass spectrometry (AMS) method, is in a range of 5 to 55 pMC. An electrode includes the conductive porous material.
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公开(公告)号：US20190177911A1
公开(公告)日：2019-06-13
申请号：US16198236
申请日：2018-11-21
Inventor： HIROHISA HINO , TAICHI NAKAMURA , KAZUMA OIKAWA , SHIGEAKI SAKATANI
Abstract: A heat insulator is provided that has a coating structure preventing separation of silica aerogel in a composite sheet. The heat insulator includes: a composite layer having silica aerogel enclosed in a nonwoven fabric; and a coating film containing a hydrophilic resin and a lipophilic resin and coating a surface of the composite layer. The nonwoven fabric resides in the coating film. In the coating film, the heat insulator includes the lipophilic resin which is present in the hydrophilic resin in the form of a plurality of islands.
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3.发明申请公开(公告)号：US20180245731A1
公开(公告)日：2018-08-30
申请号：US15897037
申请日：2018-02-14
Inventor： DAIDO KOHMYOHJI , KAZUMA OIKAWA , TAKASHI TSURUTA , TOORU WADA , SHIGEAKI SAKATANI , HIDENORI MIYAKAWA
CPC classification number: F16L59/029 , B32B9/047 , B32B17/02 , B32B2260/021 , B32B2305/026 , B32B2307/304 , F16L59/026 , F16L59/028 , F16L59/06 , F16L59/10
Abstract: Heat-insulation materials that can be placed along the lines of heat sources, heat-insulation structures using the same, and processes for producing the same. A heat-insulation material, that includes: fiber sheets that each have fibers and an aerogel and that have different sizes; and at least one covering material that covers the fiber sheets, or at least one elastic material that includes the fiber sheets. The at least one covering material may include a first covering material and a second covering material.
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公开(公告)号：US20170174859A1
公开(公告)日：2017-06-22
申请号：US15359617
申请日：2016-11-22
Inventor： SHIGEAKI SAKATANI , KAZUMA OIKAWA , KEI TOYOTA
IPC: C08J9/28 , C08J9/00 , F16L59/02 , C01B33/155
CPC classification number: C08J9/28 , C01B33/155 , C08J9/0066 , C08J2201/05 , C08J2205/026 , C08J2365/00 , F16L59/028
Abstract: A method for producing a silica aerogel, includes: (i) adding an electroconductive polymer to the sol of an aqueous alkaline silicate solution to convert the sol to a gel; (ii) aging the gel to cause said gel to grow; (iii) hydrophobizing the gel; and (iv) drying the gel. Further provided is a silica aerogel including an electroconductive polymer. Still further provided is a heat-insulation material, including the above-described silica aerogel and fibers.
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公开(公告)号：US20160060808A1
公开(公告)日：2016-03-03
申请号：US14820518
申请日：2015-08-06
Inventor： KAZUMA OIKAWA , KEI TOYOTA , SHIGEAKI SAKATANI , MASANORI MORITA , KENJI KONDO , DAIDO KOHMYOHJI
IPC: D06M15/643 , D06M10/10
CPC classification number: D06M15/643 , D06M10/10 , D06M13/513 , D06M2101/22 , D06M2101/32 , D06M2200/30 , D06M2400/01 , D06M2400/02
Abstract: A heat insulation sheet includes, as a substrate, a silica aerogel with low heat conductivity and high mechanical strength In a hydrophobization reaction of a hydrogel, a silane coupling agent having a reactive organic functional group is used to conduct hydrophobization, and, after volatilization of a solvent in a drying step, the temperature is elevated to 100° C. or higher that is a reaction-starting temperature, thereby reacting and bonding the reactive functional group and a fiber to each other. This allows prevention of detachment or loss of fine particles of silica xerogel from the unwoven fabric fiber.
Abstract translation: 隔热片包括作为基底的具有低导热性和高机械强度的二氧化硅气凝胶。在水凝胶的疏水化反应中，使用具有反应性有机官能团的硅烷偶联剂进行疏水化，并且在挥发后 在干燥步骤中的溶剂中，将温度升高至反应开始温度为100℃以上，从而使反应性官能团和纤维彼此反应并键合。 这样可以防止无纺布纤维从二氧化硅干凝胶中分离或损失细颗粒。
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Patent Agency Ranking
6.发明申请公开(公告)号：US20200122430A1
公开(公告)日：2020-04-23
申请号：US16719972
申请日：2019-12-18
Inventor： KAZUMA OIKAWA , KEI TOYOTA , SHINJI OKADA , SHIGEAKI SAKATANI
Abstract: A heat-insulation sheet includes a first silica xerogel layer, a second silica xerogel layer, and a composite layer. The first silica xerogel layer includes a first silica xerogel, and the second silica xerogel layer includes a second silica xerogel. The composite layer is located between the first silica xerogel layer and the second silica xerogel layer, and includes at least one type of unwoven fabric fibers, and a third silica xerogel. The third silica xerogel is located in a spatial volume of the unwoven fabric fibers.
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公开(公告)号：US20180156550A1
公开(公告)日：2018-06-07
申请号：US15816229
申请日：2017-11-17
Inventor： KAZUMA OIKAWA , KEI TOYOTA , SHIGEAKI SAKATANI , DAIDO KOHMYOHJI , TATSUHIRO OOSHIRO , TOORU WADA
CPC classification number: F28F13/003 , C09K21/02 , F16L59/029 , F16L59/06 , F16L59/145 , F28F21/02 , F28F21/04 , F28F2270/00
Abstract: An object of the disclosure is to provide heat insulation materials that combine high heat insulation properties realizing effective heat insulation, and flame retardancy realizing prevention of fire spreading, and devices using the same. In order to achieve this object, disclosed are heat insulation materials, including: a silica xerogel; a carbon material; unwoven fabric fibers that retains the silica xerogel, and the carbon material. Further disclosed are devices, including the above-described heat insulation material, wherein the heat insulation material serves as a part of a heat-insulation or refrigeration structure, or is placed between a heat-producing component and a casing.
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8.发明申请公开(公告)号：US20170266920A1
公开(公告)日：2017-09-21
申请号：US15309796
申请日：2016-03-16
Inventor： KAZUMA OIKAWA , KEI TOYOTA , SHINJI OKADA , SHIGEAKI SAKATANI
CPC classification number: B32B9/005 , B32B5/022 , B32B5/24 , B32B5/245 , B32B9/00 , B32B37/14 , B32B38/08 , B32B2255/02 , B32B2255/20 , B32B2260/021 , B32B2262/023 , B32B2262/0253 , B32B2262/0284 , B32B2262/101 , B32B2262/108 , B32B2266/128 , B32B2307/304 , B32B2457/00 , B32B2457/04 , C01B33/16 , F16L59/026 , F16L59/028 , F16L59/029
Abstract: A heat-insulation sheet includes a first silica xerogel layer, a second silica xerogel layer, and a composite layer. The first silica xerogel layer includes a first silica xerogel, and the second silica xerogel layer includes a second silica xerogel. The composite layer is located between the first silica xerogel layer and the second silica xerogel layer, and includes at least one type of unwoven fabric fibers, and a third silica xerogel. The third silica xerogel is located in a spatial volume of the unwoven fabric fibers.
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公开(公告)号：US20160029438A1
公开(公告)日：2016-01-28
申请号：US14774667
申请日：2014-06-04
Inventor： SHIGEAKI SAKATANI , KAZUMA OIKAWA , KENTARO TAKADA , NORIO ABE , TAKAAKI HYOUDOU
CPC classification number: H05B3/36 , B60H1/00 , B60N2/56 , B60N2/5685 , H05B1/00 , H05B3/342 , H05B2203/014 , H05B2203/02 , H05B2203/029 , H05B2203/037
Abstract: A seat heater that is a seat including: a planer heating element that has a plurality of electric heating wires on its upper surface and that includes a fiber layer; a cushion member that locates over a lower surface of the planer heating element; and a skin that locates above the planer heating element, wherein the planer heating element has, in voids of the fiber layer, a silica aerogel that is a silica porous body having pores with a mean pore diameter of 10 nm to 68 nm.
Abstract translation: 一种座椅加热器，其包括：平面加热元件，其上表面具有多根电加热线，并且包括纤维层; 缓冲构件，其位于所述平面加热元件的下表面上; 以及位于平面加热元件上方的皮肤，其中平面加热元件在纤维层的空隙中具有作为平均孔径为10nm至68nm的孔的二氧化硅多孔体的二氧化硅气凝胶。
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10.发明申请公开(公告)号：US20200378058A1
公开(公告)日：2020-12-03
申请号：US16877046
申请日：2020-05-18
Inventor： KAZUMA OIKAWA , TOORU WADA , SHIGEKI SAKAGUCHI , TAKASHI KUBO , TAKASHI TSURUTA , SHIGEAKI SAKATANI , DAIDO KOMYOJI
IPC: D06M11/79 , H01M10/658 , H01M10/0525
Abstract: A manufacturing method of a heat insulating sheet of the present disclosure includes a composite generating step of impregnating a nonwoven fiber with a basic sol prepared to generate a composite of a hydrogel-nonwoven fiber, the basic sol being prepared by adding carbonate ester to a water glass composition; and a drying step of drying a liquid contained in the composite at a temperature lower than a critical temperature of the liquid and a pressure lower than a critical pressure of the liquid to remove the liquid from the composite. A heat insulating sheet according to the present disclosure includes an aerogel and a nonwoven fiber, and has a compression rate at 0.30 MPa to 5.0 MPa of 40% or less. In an electronic device of the present disclosure, the heat insulating sheet is disposed between an electronic component and a housing. In a battery unit of the present disclosure, the heat insulating sheet is disposed between batteries. This provides a heat insulating sheet that can be used under a high load and a manufacturing method thereof, and an electronic device and a battery unit including the same.
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