Patents by Inventor Makoto Tai

Makoto Tai 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).

  • Patent number: 11946143
    Abstract: A laminate comprising a substrate; and a plating-forming layer disposed on at least one surface of both surfaces of the substrate and containing a thermoplastic resin and a plating catalyst, wherein the plating-forming layer further satisfies conditions of the following (1) and/or (2), (1) the plating-forming layer contains a dispersing agent for dispersing the plating catalyst (2) an abundance of the plating catalyst on a surface side of the plating-forming layer is higher than an abundance of the plating catalyst on the substrate side of the plating-forming layer.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: April 2, 2024
    Assignee: Arisawa Mfg. Co., Ltd.
    Inventors: Kenji Nakamura, Yoshihiko Konno, Hiroyuki Matsuyama, Makoto Tai, Shuichi Fujita
  • Publication number: 20240079606
    Abstract: A fuel cell separator material includes: a composite material containing electrically conductive particles and a binder resin; and soluble resin layers located on both sides of the composite material.
    Type: Application
    Filed: June 29, 2023
    Publication date: March 7, 2024
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, ARISAWA MFG. CO., LTD.
    Inventors: Takuya HATTORI, Nobuaki NONOYAMA, Makoto TAI, Akira YOSHIDA, Yurina ISHIKAWA, Hideaki DEGUCHI
  • Patent number: 11609493
    Abstract: This photosensitive resin composition comprises: a photosensitive prepolymer having a carboxyl group and an ethylenically unsaturated group; a photopolymerization initiator; a thermosetting agent; and a pigment. The thermosetting agent is a polycarbodiimide compound represented by formula (1), in which a carbodiimide group is protected by an amino group that dissociates at temperatures of 80? or greater. The polycarbodiimide compound has a weight average molecular weight of 300-3000, and a carbodiimide equivalent weight of 150-600. When formed into a film having a dry film thickness of 10-40 ?m, the maximum value of the transmittance of the photosensitive resin composition is at least 7% for the transmission spectrum of at least some of the wavelength from 350-430 nm. (In formula (1), R1, R2, X1, X2, and n are as defined in the description.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: March 21, 2023
    Assignee: ARISAWA MFG. CO., LTD.
    Inventors: Takashi Gondaira, Makoto Tai
  • Patent number: 11402754
    Abstract: The present invention provides a photosensitive resin composition from which a dry resist film having excellent resilience, storage stability and heat resistance can be produced. The photosensitive resin composition according to the present invention includes a photosensitive prepolymer having a carboxyl group and an ethylenically unsaturated group, a photopolymerization initiator and a thermal curing agent, wherein the thermal curing agent is a polycarbodiimide compound having a carbodiimide group, the carbodiimide group in the polycarbodiimide compound is protected by an amino group that can be dissociated at a temperature equal to or higher than 80° C. and the polycarbodiimide compound has a weight average molecular weight of 400 to 5000 and a carbodiimide equivalent of 180 to 2500.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: August 2, 2022
    Assignee: ARISAWA MFG. CO., LTD.
    Inventors: Takashi Gondaira, Makoto Tai
  • Patent number: 11376826
    Abstract: A multilayer film including alternately-laminated fluororesin layers and polyimide resin layers, wherein a total number of the fluororesin layers and the polyimide resin layers is five or more, a ratio of the total thickness of the fluororesin layers to the thickness of the whole multilayer film is 50% or more, and at least one of the outermost layers of the multilayer film is a fluororesin layer.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: July 5, 2022
    Assignee: Arisawa Mfg. Co., Ltd.
    Inventors: Hiroyuki Matsuyama, Makoto Tai, Akira Fujita, Takayuki Mayama
  • Patent number: 11317507
    Abstract: A laminate comprising a substrate; an adhesive layer formed on at least one surface of both surfaces of the substrate so as to be in direct contact with the substrate; and a plating layer formed on a surface of the adhesive layer opposite to the substrate, wherein the adhesive layer comprises a plating catalyst containing a precious metal, and a silane coupling agent.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: April 26, 2022
    Assignee: Arisawa Mfg. Co., Ltd.
    Inventors: Naoki Suzuki, Makoto Tai, Shuichi Fujita
  • Publication number: 20210348276
    Abstract: A laminate comprising a substrate; and a plating-forming layer disposed on at least one surface of both surfaces of the substrate and containing a thermoplastic resin and a plating catalyst, wherein the plating-forming layer further satisfies conditions of the following (1) and/or (2), (1) the plating-forming layer contains a dispersing agent for dispersing the plating catalyst (2) an abundance of the plating catalyst on a surface side of the plating-forming layer is higher than an abundance of the plating catalyst on the substrate side of the plating-forming layer.
    Type: Application
    Filed: September 4, 2019
    Publication date: November 11, 2021
    Applicant: Arisawa Mfg. Co., Ltd.
    Inventors: Kenji Nakamura, Yoshihiko Konno, Hiroyuki Matsuyama, Makoto Tai, Shuichi Fujita
  • Publication number: 20210170732
    Abstract: A multilayer film including alternately-laminated fluororesin layers and polyimide resin layers, wherein a total number of the fluororesin layers and the polyimide resin layers is five or more, a ratio of the total thickness of the fluororesin layers to the thickness of the whole multilayer film is 50% or more, and at least one of the outermost layers of the multilayer film is a fluororesin layer.
    Type: Application
    Filed: March 19, 2019
    Publication date: June 10, 2021
    Inventors: Hiroyuki Matsuyama, Makoto Tai, Akira Fujita, Takayuki Mayama
  • Patent number: 10982093
    Abstract: The present invention provides a low-dielectric resin composition comprising (A) a urethane resin obtained by reacting a polycarbonate diol and an isocyanate, (B) an epoxy resin, and (C) a filler, wherein the (A) urethane resin has a carboxyl group equivalent weight of 1,100 to 5,700 g/eq; the epoxy equivalent weight of the (B) epoxy resin is 0.3 to 4.5 equivalents per 1.0 equivalent of the carboxyl group of the (A) urethane resin, the (A) urethane resin has a weight-average molecular weight of 5,000 to 80,000; the (A) urethane resin has a polycarbonate content of 35% by mass or lower; the resin composition comprises 50 parts by mass or less of the (C) filler per 100 parts by mass of the (A) urethane resin; and the resin composition comprises substantially no imido group.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: April 20, 2021
    Assignee: Arisawa Mfg. Co., Ltd.
    Inventors: Kazuo Yoshikawa, Makoto Tai, Nobuyuki Iwano
  • Publication number: 20200413535
    Abstract: A laminate comprising a substrate; an adhesive layer formed on at least one surface of both surfaces of the substrate so as to be in direct contact with the substrate; and a plating layer formed on a surface of the adhesive layer opposite to the substrate, wherein the adhesive layer comprises a plating catalyst containing a precious metal, and a silane coupling agent.
    Type: Application
    Filed: February 22, 2019
    Publication date: December 31, 2020
    Inventors: Naoki Suzuki, Makoto Tai, Shuichi Fujita
  • Publication number: 20200347177
    Abstract: A photocurable resin composition according to the present invention contains an anionic-group-containing photosensitive resin comprising a photosensitive urethane resin, a photopolymerization initiator and a thermal curing agent, wherein the photosensitive urethane resin is produced by reacting a raw material mixture containing (A) a polyol having at least an ester bond and also having an unsaturated bond at least in the main chain thereof, (B) a compound having at least one active-hydrogen-containing group and at least one anionic group in the molecule thereof, (C) a polyisocyanate and (D) a compound having at least one active-hydrogen-containing group and an unsaturated bond group in the molecule thereof, and the photosensitive urethane resin has an ester bond and an unsaturated bond in the main chain in the same molecule, wherein at least one of a side chain and a terminal has an anionic group and a side chain has an unsaturated bond group.
    Type: Application
    Filed: January 23, 2019
    Publication date: November 5, 2020
    Inventors: Makoto TAI, Takashi GONDAIRA
  • Patent number: 10627716
    Abstract: The present invention provides a photosensitive resin composition with which a dry resist film can be obtained, the dry resist film exhibiting excellent storage stability and migration resistance in thickness direction thereof. This photosensitive resin composition comprises: a photosensitive prepolymer having a carboxyl group and an ethylenically unsaturated group; a photopolymerization initiator; and a thermosetting agent. The thermosetting agent is a polycarbodiimide compound represented by formula (1), in which a carbodiimide group is protected by an amino group that dissociates at temperatures of 80° C. or greater. The polycarbodiimide compound has a weight average molecular weight of 300-3000, and a carbodiimide equivalent weight of 150-600. In formula (1), R1, R2, X1, X2, and n are as defined in the description.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: April 21, 2020
    Assignee: ARISAWA MFG. CO., LTD.
    Inventors: Takashi Gondaira, Makoto Tai
  • Publication number: 20200026186
    Abstract: The present invention provides a photosensitive resin composition with which a dry resist film can be obtained, the dry resist film exhibiting excellent storage stability and migration resistance in thickness direction thereof. This photosensitive resin composition comprises: a photosensitive prepolymer having a carboxyl group and an ethylenically unsaturated group; a photopolymerization initiator; and a thermosetting agent. The thermosetting agent is a polycarbodiimide compound represented by formula (1), in which a carbodiimide group is protected by an amino group that dissociates at temperatures of 80° C. or greater. The polycarbodiimide compound has a weight average molecular weight of 300-3000, and a carbodiimide equivalent weight of 150-600. In formula (1), R1, R2, X1, X2, and n are as defined in the description.
    Type: Application
    Filed: February 28, 2017
    Publication date: January 23, 2020
    Inventors: Takashi GONDAIRA, Makoto TAI
  • Publication number: 20200019054
    Abstract: This photosensitive resin composition comprises: a photosensitive prepolymer having a carboxyl group and an ethylenically unsaturated group; a photopolymerization initiator; a thermosetting agent; and a pigment. The thermosetting agent is a polycarbodiimide compound represented by formula (1), in which a carbodiimide group is protected by an amino group that dissociates at temperatures of 80? or greater. The polycarbodiimide compound has a weight average molecular weight of 300-3000, and a carbodiimide equivalent weight of 150-600. When formed into a film having a dry film thickness of 10-40 ?m, the maximum value of the transmittance of the photosensitive resin composition is at least 7% for the transmission spectrum of at least some of the wavelength from 350-430 nm. (In formula (1), R1, R2, X1, X2, and n are as defined in the description.
    Type: Application
    Filed: February 6, 2018
    Publication date: January 16, 2020
    Inventors: Takashi GONDAIRA, Makoto TAI
  • Publication number: 20190332011
    Abstract: The present invention provides a photosensitive resin composition from which a dry resist film having excellent resilience, storage stability and heat resistance can be produced. The photosensitive resin composition according to the present invention includes a photosensitive prepolymer having a carboxyl group and an ethylenically unsaturated group, a photopolymerization initiator and a thermal curing agent, wherein the thermal curing agent is a polycarbodiimide compound having a carbodiimide group, the carbodiimide group in the polycarbodiimide compound is protected by an amino group that can be dissociated at a temperature equal to or higher than 80° C. and the polycarbodiimide compound has a weight average molecular weight of 400 to 5000 and a carbodiimide equivalent of 180 to 2500.
    Type: Application
    Filed: April 21, 2017
    Publication date: October 31, 2019
    Inventors: Takashi GONDAIRA, Makoto TAI
  • Publication number: 20180242448
    Abstract: The present invention provides a resin composition comprising a specific styrene polymer, a specific inorganic filler, and a curing agent, wherein the styrene polymer is a specific acid-modified styrene polymer, and the resin composition satisfies specific conditions in the form of a film having a thickness of 25 ?m.
    Type: Application
    Filed: February 14, 2018
    Publication date: August 23, 2018
    Inventors: Kazuo YOSHIKAWA, Makoto TAI, Nobuyuki IWANO, Takayuki MAYAMA
  • Publication number: 20180022919
    Abstract: The present invention provides a low-dielectric resin composition comprising (A) a urethane resin obtained by reacting a polycarbonate diol and an isocyanate, (B) an epoxy resin, and (C) a filler, wherein the (A) urethane resin has a carboxyl group equivalent weight of 1,100 to 5,700 g/eq; the epoxy equivalent weight of the (B) epoxy resin is 0.3 to 4.5 equivalents per 1.0 equivalent of the carboxyl group of the (A) urethane resin, the (A) urethane resin has a weight-average molecular weight of 5,000 to 80,000; the (A) urethane resin has a polycarbonate content of 35% by mass or lower; the resin composition comprises 50 parts by mass or less of the (C) filler per 100 parts by mass of the (A) urethane resin; and the resin composition comprises substantially no imido group.
    Type: Application
    Filed: February 8, 2016
    Publication date: January 25, 2018
    Inventors: Kazuo YOSHIKAWA, Makoto TAI, Nobuyuki IWANO
  • Publication number: 20160280979
    Abstract: A resin composition for a flexible printed circuit board that can attain high adhesiveness and solder reflow resistance even if a base film having low dielectric properties is used, and that attains excellent electrical properties. The resin comprises a fluororesin and an isocyanate compound, wherein the fluororesin has a content of 1 to 50% by mass, and a hydroxyl equivalent of 300 to 5500 g/equivalent.
    Type: Application
    Filed: June 9, 2016
    Publication date: September 29, 2016
    Inventors: Akira Uchiyama, Kazuo Yoshikawa, Makoto Tai, Nobuyuki Iwano
  • Publication number: 20140224529
    Abstract: To provide a flame-retardant resin composition that has superior adhesion subsequent to curing and molding when used as a printed wiring board adhesive and that provides superior printed wiring board electrical characteristics; and a flexible printed wiring board metal-clad laminate, a coverlay, a flexible printed wiring board adhesive sheet, and a flexible printed wiring board employing this resin composition. (SOLUTION) The flame-retardant resin composition comprises a thermosetting resin, a hardener, and a phosphorus-containing polymer.
    Type: Application
    Filed: June 4, 2012
    Publication date: August 14, 2014
    Applicant: ARISAWA MFG. CO., LTD.
    Inventors: Shu Dobashi, Yuji Toyama, Tsuneo Koike, Makoto Tai, Marc-Andre Lebel, Jan-Pleun Lens
  • Publication number: 20130316170
    Abstract: A resin composition for a flexible printed circuit board that can attain high adhesiveness and solder reflow resistance even if a base film having low dielectric properties is used, and that attains excellent electrical properties. The resin comprises a fluororesin and an isocyanate compound, wherein the fluororesin has a content of 1 to 50% by mass, and a hydroxyl equivalent of 300 to 5500 g/equivalent.
    Type: Application
    Filed: May 28, 2013
    Publication date: November 28, 2013
    Applicant: ARISAWA MFG. CO., LTD.
    Inventors: Akira Uchiyama, Kazuo Yoshikawa, Makoto Tai, Nobuyuki Iwano