Patents Assigned to SHOWA DENKO MATERIALS CO., LTD.
  • Patent number: 11479667
    Abstract: A two-part curable urethane-based composition comprising a main agent (A); and a curing agent (B), wherein the main agent (A) contains a urethane prepolymer (a), an isocyanurate modified product of a polyisocyanate compound (b), and a silane coupling agent (c) in a specified ratio, the curing agent (B) contains a polyol (d) having a hydroxyl value of 50 to 500 mgKOH/g and an amine catalyst (e) in a specified amount, a mixing mass ratio of the main agent (A) to the curing agent (B) is 3:1 to 10:1, and an equivalent ratio of NCO group/OH group in the main agent (A) and the curing agent (B), respectively, is 1.0 to 5.0.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: October 25, 2022
    Assignee: Showa Denko Materials Co., Ltd.
    Inventors: Yuya Hiramoto, Hisao Matsumiya, Kazuhiko Mori
  • Patent number: 11482466
    Abstract: A method of manufacturing a semiconductor device includes: adhering together a heat generating body and a heat dissipating body via a thermally conductive sheet by applying a pressure on the heat generating body and the heat dissipating body in a thickness direction of the thermally conductive sheet with the thermally conductive sheet disposed therebetween, the thermally conductive sheet having a compression modulus of 1.40 MPa or less under a compressive stress of 0.10 MPa at 150° C., and a tack strength of 5.0 N·mm or more at 25° C.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: October 25, 2022
    Assignee: SHOWA DENKO MATERIALS CO., LTD.
    Inventors: Mika Kobune, Michiaki Yajima
  • Patent number: 11482467
    Abstract: A method of manufacturing a semiconductor device includes adhering together a heat dissipating body and a plurality of heat generating bodies via a thermally conductive sheet, by applying pressure to the heat dissipating body and the plurality of heat generating bodies in a thickness direction of the thermally conductive sheet with the thermally conductive sheet disposed therebetween, the thermally conductive sheet having a compression modulus of 1.40 MPa or less under a compressive stress of 0.10 MPa at 150° C.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: October 25, 2022
    Assignee: SHOWA DENKO MATERIALS CO., LTD.
    Inventors: Mika Kobune, Michiaki Yajima
  • Patent number: 11483936
    Abstract: Provided is a method for producing a joined body, the method including a first step of preparing a laminated body which includes a first member having a metal pillar provided on a surface thereof, a second member having an electrode pad provided on a surface thereof, and a joining material provided between the metal pillar and the electrode pad and containing metal particles and an organic compound, and a second step of heating the laminated body to sinter the joining material at a predetermined sintering temperature, in which the joining material satisfies the condition of the following Formula (I): (M1?M2)/M1×100?1.0??(I) [in Formula (I), M1 represents a mass of the joining material when a temperature of the joining material reaches the sintering temperature in the second step, and M2 represents a non-volatile content in the joining material.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: October 25, 2022
    Assignee: Showa Denko Materials Co., Ltd.
    Inventors: Hideo Nakako, Yoshinori Ejiri, Dai Ishikawa, Chie Sugama, Yuki Kawana, Motohiro Negishi, Yuichi Yanaka
  • Patent number: 11476421
    Abstract: One embodiment relates to an organic electronic material containing a charge transport polymer, wherein the charge transport polymer is a polymer which, when 25 ?L portions of methanol are added dropwise and stirred into 1,000 ?L of a solution containing the charge transport polymer and toluene in a ratio of 20 mg of the charge transport polymer per 2,290 ?L of toluene, the amount of methanol added by the time cloudiness develops in the solution is greater than 350 ?L.
    Type: Grant
    Filed: July 4, 2018
    Date of Patent: October 18, 2022
    Assignee: SHOWA DENKO MATERIALS CO., LTD.
    Inventors: Kazuyuki Kamo, Iori Fukushima, Ryota Moriyama, Shunsuke Kodama, Naoki Asano, Hirotaka Sakuma
  • Patent number: 11466119
    Abstract: An epoxy resin, comprising an epoxy compound having a mesogenic structure, the epoxy compound comprising a first epoxy compound having one biphenyl structure in a molecule and a second epoxy compound that is different from the first epoxy compound, at a mass ratio of the first epoxy compound to the second epoxy compound (first epoxy compound:second epoxy compound) of from 10:100 to 50:100.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: October 11, 2022
    Assignee: Showa Denko Materials Co., Ltd.
    Inventors: Kazumasa Fukuda, Yoshitaka Takezawa, Naoki Maruyama, Yuka Yoshida, Tomoko Higashiuchi
  • Publication number: 20220315898
    Abstract: One embodiment relates to a method for manufacturing a cell suspension, the method including (A), (B) and (C) described below: (A) culturing adherent cells in a cell suspension containing the adherent cells, a microcarrier and a medium, and having a volume of at least 0.3 L, (B) culturing the adherent cells in a cell suspension containing the adherent cells obtained through (A), a microcarrier and a medium, and having a volume of at least 5 L, and (C) culturing the adherent cells in a cell suspension containing the adherent cells obtained through (B), a microcarrier and a medium, and having a volume of at least 10 L.
    Type: Application
    Filed: December 22, 2020
    Publication date: October 6, 2022
    Applicant: Showa Denko Materials Co., Ltd.
    Inventors: Shangwu Chen, Fumiko Nakagawa, Yasuhiko Tada, Masahiro Okanojo, Yushi Sato, Yuma Suzuki, Katsuhiko Nakashima, Ryosuke Takahashi
  • Publication number: 20220315793
    Abstract: An encapsulating material for compression molding includes an epoxy resin, a curing agent, and an inorganic filler. In an image obtained by observing, with an ultrasonic flaw detector, a compression-molded body formed by compression-molding the encapsulating material for compression molding on a substrate with a silicon chip interposed, the area of the portion other than dark spots of the region corresponding to the compression-molded body on the chip is 86% or more of the area of the entire region corresponding to the compression-molded body on the chip.
    Type: Application
    Filed: September 11, 2020
    Publication date: October 6, 2022
    Applicant: Showa Denko Materials Co., Ltd.
    Inventors: Dongchul KANG, Seigo OKUBO
  • Patent number: 11462767
    Abstract: Disclosed is an electrochemical device electrode comprising an electrode current collector and an electrode mixture layer provided on at least one principal surface of the electrode current collector, wherein the electrode mixture layer comprises an electrode active material, a polymer having a structural unit represented by the following formula (1), at least one electrolyte salt selected from the group consisting of lithium salts, sodium salts, calcium salts, and magnesium salts, and a molten salt having a melting point of 250° C. or less: wherein X? represents a counter anion.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: October 4, 2022
    Assignee: SHOWA DENKO MATERIALS CO., LTD.
    Inventors: Yusuke Sera, Hideyuki Ogawa, Hiroki Mikuni
  • Patent number: 11462502
    Abstract: Provided is a metal paste for joints, containing: metal particles; and linear or branched monovalent aliphatic alcohol having 1 to 20 carbon atoms, in which the metal particles include sub-micro copper particles having a volume average particle diameter of 0.12 ?m to 0.8 ?M.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: October 4, 2022
    Assignee: Showa Denko Materials Co., Ltd.
    Inventors: Yuki Kawana, Hideo Nakako, Motohiro Negishi, Dai Ishikawa, Chie Sugama, Yoshinori Ejiri
  • Patent number: 11459462
    Abstract: A charge transport material containing a charge transport polymer that satisfies at least one of (I) or (II) described below: (I) to independently have both a monovalent substituent having an alicyclic structure of 7 or more carbon atoms, and a monovalent substituent having a carbonyl-containing group; and (II) to have a monovalent substituent that includes a monovalent substituent having an alicyclic structure of 7 or more carbon atoms bonded directly to a carbonyl-containing group.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: October 4, 2022
    Assignee: SHOWA DENKO MATERIALS CO., LTD.
    Inventors: Kazuyuki Kamo, Naoki Asano, Hiroshi Takaira, Iori Fukushima, Shigeaki Funyuu
  • Publication number: 20220306980
    Abstract: Apparatus, system, and method are disclosed for cell recovery or cell separation. A cell separation system has at least a first container having a first filter for separating a first removal target from a suspension comprising cells and a removal target including at least the first removal target and a second removal target; a cell separation apparatus; a first flow path connecting the first container and the cell separation apparatus; and a first pump interposed in the first flow path for transferring the suspension from the first container to the cell separation apparatus by decompression suction, for example.
    Type: Application
    Filed: December 15, 2020
    Publication date: September 29, 2022
    Applicant: SHOWA DENKO MATERIALS CO., LTD.
    Inventors: Yushi Sato, Masahiro Okanojo, Shangwu Chen, Katsuhiko Nakashima, Ryosuke Takahashi, Yasuhiko Tada
  • Patent number: 11446845
    Abstract: In the method for adhering a resin film with an aggregate under an atmospheric pressure in which workability is excellent and spouting of the resin from an edge portion of the aggregate can be suppressed, the present invention provides a method for producing an FRP precursor with excellent resin filling property into bulk voids of the aggregate as well as a method for producing an FRP. Specifically, provided is the method for producing the FRP precursor by adhering a thermosetting resin film to one surface of an aggregate that is in a form of a sheet under an atmospheric pressure, wherein the method includes a process in which the thermosetting resin film and the aggregate are press-adhered by heating by means of a pressure roll having a temperature in a range of +5° C. to +35° C. relative to a temperature at which a minimum melt viscosity of the film is exhibited.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: September 20, 2022
    Assignee: Showa Denko Materials Co., Ltd.
    Inventors: Ryohta Sasaki, Yukio Nakamura, Kazutoshi Danjoubara, Takeshi Saitoh, Shintaro Hashimoto
  • Patent number: 11441022
    Abstract: In one aspect, the present invention is a resin member comprising a copolymer of ethylene and an olefin having 3 or more carbon atoms, a straight-chain saturated hydrocarbon compound, and a gelling agent.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: September 13, 2022
    Assignee: SHOWA DENKO MATERIALS CO., LTD.
    Inventors: Akira Nagai, Tsuyoshi Morimoto, Teiichi Inada
  • Patent number: 11444054
    Abstract: Provided is a semiconductor element mounting structure, including: a semiconductor element including an element electrode, and a substrate including a substrate electrode that is provided on a surface facing the semiconductor element at a position facing the element electrode, the semiconductor element and the substrate being connected via the element electrode and the substrate electrode, in which: one of the element electrode or the substrate electrode is a first protruding electrode including a solder layer at a tip portion thereof, the other of the element electrode or the substrate electrode is a first electrode pad including one or more metal protrusions on a surface thereof, the one or more metal protrusions of the first electrode pad extend into the solder layer of the first protruding electrode, and a bottom area of each of the one or more metal protrusions of the first electrode pad is 70% or less with respect to an area of the first electrode pad, or 75% or less with respect to a maximum cross-sect
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: September 13, 2022
    Assignee: Showa Denko Materials Co., Ltd.
    Inventors: Hitoshi Onozeki, Shizu Fukuzumi, Naoya Suzuki, Toshihisa Nonaka
  • Patent number: 11440990
    Abstract: An epoxy resin, comprising an epoxy compound having at least two mesogenic structures and at least one divalent biphenyl group.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: September 13, 2022
    Assignee: Showa Denko Materials Co., Ltd.
    Inventors: Yuka Yoshida, Naoki Maruyama, Tomoko Higashiuchi, Kazumasa Fukuda, Keiichiro Nishimura, Yoshitaka Takezawa
  • Patent number: 11444325
    Abstract: One aspect of the present invention provides an electrolytic solution comprising a compound represented by the following formula (1), wherein a content of the compound is 10% by mass or less based on the total amount of the electrolytic solution, wherein R1 to R3 each independently represent an alkyl group or a fluorine atom, R4 represents an alkylene group, and R5 represents an organic group containing a nitrogen atom.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: September 13, 2022
    Assignee: Showa Denko Materials Co., Ltd.
    Inventors: Kaoru Konno, Kumpei Yamada, Ryuichiro Fukuta
  • Patent number: 11432400
    Abstract: Provided is an interlayer insulating film for a multi-layered printed wiring board, including a wiring embedding layer (A) obtained by forming a thermosetting resin composition (I) into a layer, and an adhesion assisting layer (B) obtained by forming a thermosetting resin composition (II) into a layer, in which the interlayer insulating film contains a residual solvent in an amount of 1% to 10% by mass in a total amount of the wiring embedding layer (A) and the adhesion assisting layer (B), and the residual solvent contains an organic solvent having a boiling point of 150° C. to 230° C. in an amount of 10% by mass or more in a total amount of the residual solvent.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: August 30, 2022
    Assignee: Showa Denko Materials Co., Ltd.
    Inventors: Masaharu Matsuura, Nobuyuki Ogawa, Shin Takanezawa, Yasuyuki Mizuno
  • Patent number: D962882
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: September 6, 2022
    Assignee: SHOWA DENKO MATERIALS CO., LTD.
    Inventor: Naoki Tomori
  • Patent number: D962883
    Type: Grant
    Filed: April 22, 2021
    Date of Patent: September 6, 2022
    Assignee: SHOWA DENKO MATERIALS CO., LTD.
    Inventor: Naoki Tomori