Patents by Inventor Tomio Fukuda

Tomio Fukuda 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: 11359055
    Abstract: Provided are a thermosetting resin composition having especially good compatibility and having dielectric properties (low dielectric constant and low dielectric dissipation factor) in a high frequency range, high adhesion to conductor, excellent heat resistance, high glass transition temperature, low thermal expansion coefficient and high flame retardancy, and a prepreg, a laminate and a multilayer printed wiring board using the resin composition.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: June 14, 2022
    Assignee: Showa Denko Materials Co., Ltd.
    Inventors: Takao Tanigawa, Yasuyuki Mizuno, Tomio Fukuda, Yuki Nagai, Hikari Murai
  • Patent number: 11339251
    Abstract: The present invention relates to a resin composition comprising a maleimide compound having a saturated or unsaturated divalent hydrocarbon group and a divalent group having at least two imido bonds; and a catalyst comprising at least one selected from the group consisting of an imidazole compound, a phosphorus compound, an azo compound and an organic peroxide.
    Type: Grant
    Filed: July 4, 2017
    Date of Patent: May 24, 2022
    Assignee: SHOWA DENKO MATERIALS CO., LTD.
    Inventors: Yuki Nagai, Tetsuroh Irino, Yuusuke Kondou, Tomio Fukuda, Etsuo Mizushima, Takao Tanigawa
  • Patent number: 11286346
    Abstract: The present invention relates to a resin composition containing a compound having a maleimido group, a divalent group having at least two imido bonds and a saturated or unsaturated divalent hydrocarbon group.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: March 29, 2022
    Assignee: SHOWA DENKO MATERIALS CO., LTD.
    Inventors: Takao Tanigawa, Tetsuroh Irino, Yuusuke Kondou, Yuichi Shimayama, Etsuo Mizushima, Tomio Fukuda, Yuki Nagai, Hikari Murai
  • Patent number: 11041045
    Abstract: Provided are a resin composition having especially good compatibility and having dielectric properties (low dielectric constant and low dielectric dissipation factor) in a high frequency range, high adhesion to conductor, excellent heat resistance, high glass transition temperature, low thermal expansion coefficient and high flame retardancy, and a prepreg, a laminate and a multilayer printed wiring board using the resin composition. Specifically, the resin composition contains (A) a polyphenylene ether derivative having an N-substituted maleimide structure-containing group and a structural unit represented by the following general formula (I) in one molecule, (B) at least one thermosetting resin selected from the group consisting of epoxy resins, cyanate resins and maleimide compounds, and (C) a styrenic thermoplastic elastomer: wherein R1 each independently represents an aliphatic hydrocarbon group having 1 to 5 carbon atoms, or a halogen atom, and x represents an integer of 0 to 4.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: June 22, 2021
    Assignee: SHOWA DENKO MATERIALS CO., LTD.
    Inventors: Yuki Nagai, Yasuyuki Mizuno, Tomio Fukuda, Takao Tanigawa, Hikari Murai
  • Patent number: 10957964
    Abstract: Provided is a multilayered transmission line plate including one pair of ground layers, a differential wiring layer disposed between one ground layer and the other ground layer of the one pair of ground layers, a first insulating portion disposed between the differential wiring layer and the one ground layer, and a second insulating portion disposed between the differential wiring layer and the other ground layer, wherein the first insulating portion has a resin layer, the first insulating portion or the second insulating portion has a fiber base material layer including a fiber base material, and a thickness of the first insulating portion is equal to or thinner than a thickness of the second insulating portion.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: March 23, 2021
    Assignee: SHOWA DENKO MATERIALS CO., LTD.
    Inventors: Takao Tanigawa, Tetsurou Irino, Yuusuke Kondou, Etsuo Mizushima, Tomio Fukuda, Yuki Nagai
  • Patent number: 10876000
    Abstract: A thermosetting resin composition containing: (A) an addition reaction product of a maleimide compound having at least two N-substituted maleimide groups in one molecule (a1) and an amine compound having at least two primary amino groups in one molecule (a2), (B) a thermoplastic elastomer, and (C) a copolymer resin having a structural unit derived from an aromatic vinyl compound and a structural unit derived from a carboxylic acid anhydride.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: December 29, 2020
    Assignee: Showa Denko Materials Co., Ltd.
    Inventors: Shunsuke Tonouchi, Tomokazu Shimada, Kazutoshi Danjoubara, Tomio Fukuda, Minoru Kakitani
  • Publication number: 20200071464
    Abstract: Provided are a thermosetting resin composition having especially good compatibility and having dielectric properties (low dielectric constant and low dielectric dissipation factor) in a high frequency range, high adhesion to conductor, excellent heat resistance, high glass transition temperature, low thermal expansion coefficient and high flame retardancy, and a prepreg, a laminate and a multilayer printed wiring board using the resin composition.
    Type: Application
    Filed: November 7, 2019
    Publication date: March 5, 2020
    Inventors: Takao TANIGAWA, Yasuyuki MIZUNO, Tomio FUKUDA, Yuki NAGAI, Hikari MURAI
  • Patent number: 10519279
    Abstract: Provided are a thermosetting resin composition having especially good compatibility and having dielectric properties (low dielectric constant and low dielectric dissipation factor) in a high frequency range, high adhesion to conductor, excellent heat resistance, high glass transition temperature, low thermal expansion coefficient and high flame retardancy, and a prepreg, a laminate and a multilayer printed wiring board using the resin composition.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: December 31, 2019
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Takao Tanigawa, Yasuyuki Mizuno, Tomio Fukuda, Yuki Nagai, Hikari Murai
  • Patent number: 10506705
    Abstract: Provided is a multilayered transmission line plate including a pair of ground layers, a differential wiring disposed between a one-sided ground layer of the pair of ground layers and the other ground layer, an insulating layer (X) disposed between the differential wiring and the one-sided ground layer, and an insulating layer (Y) disposed between the differential wiring and the other ground layer, wherein the insulating layer (X) has a layer containing a resin and not containing a glass cloth; the insulating layer (X) or the insulating layer (Y) has a layer containing a glass cloth and a resin; and the thickness of the insulating layer (X) is equal to or less than the thickness of the insulating layer (Y).
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: December 10, 2019
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Yuusuke Kondou, Etsuo Mizushima, Takao Tanigawa, Yuki Nagai, Tomio Fukuda, Tetsurou Irino
  • Publication number: 20190309130
    Abstract: The present invention relates to a resin composition comprising a maleimide compound having a saturated or unsaturated divalent hydrocarbon group and a divalent group having at least two imido bonds; and a catalyst comprising at least one selected from the group consisting of an imidazole compound, a phosphorus compound, an azo compound and an organic peroxide.
    Type: Application
    Filed: July 4, 2017
    Publication date: October 10, 2019
    Inventors: Yuki NAGAI, Tetsuroh IRINO, Yuusuke KONDOU, Tomio FUKUDA, Etsuo MIZUSHIMA, Takao TANIGAWA
  • Publication number: 20190169432
    Abstract: A thermosetting resin composition containing: (A) an addition reaction product of a maleimide compound having at least two N-substituted maleimide groups in one molecule (a1) and an amine compound having at least two primary amino groups in one molecule (a2), (B) a thermoplastic elastomer, and (C) a copolymer resin having a structural unit derived from an aromatic vinyl compound and a structural unit derived from a carboxylic acid anhydride.
    Type: Application
    Filed: May 30, 2017
    Publication date: June 6, 2019
    Inventors: Shunsuke TONOUCHI, Tomokazu SHIMADA, Kazutoshi DANJOUBARA, Tomio FUKUDA, Minoru KAKITANI
  • Publication number: 20190023899
    Abstract: Provided is a multilayered transmission line plate including one pair of ground layers, a differential wiring layer disposed between one ground layer and the other ground layer of the one pair of ground layers, a first insulating portion disposed between the differential wiring layer and the one ground layer, and a second insulating portion disposed between the differential wiring layer and the other ground layer, wherein the first insulating portion has a resin layer, the first insulating portion or the second insulating portion has a fiber base material layer including a fiber base material, and a thickness of the first insulating portion is equal to or thinner than a thickness of the second insulating portion.
    Type: Application
    Filed: July 20, 2016
    Publication date: January 24, 2019
    Inventors: Takao TANIGAWA, Tetsurou IRINO, Yuusuke KONDOU, Etsuo MIZUSHIMA, Tomio FUKUDA, Yuki NAGAI
  • Publication number: 20180139837
    Abstract: Provided is a multilayered transmission line plate including a pair of ground layers, a differential wiring disposed between a one-sided ground layer of the pair of ground layers and the other ground layer, an insulating layer (X) disposed between the differential wiring and the one-sided ground layer, and an insulating layer (Y) disposed between the differential wiring and the other ground layer, wherein the insulating layer (X) has a layer containing a resin and not containing a glass cloth; the insulating layer (X) or the insulating layer (Y) has a layer containing a glass cloth and a resin; and the thickness of the insulating layer (X) is equal to or less than the thickness of the insulating layer (Y).
    Type: Application
    Filed: November 20, 2015
    Publication date: May 17, 2018
    Inventors: Yuusuke KONDOU, Etsuo MIZUSHIMA, Takao TANIGAWA, Yuki NAGAI, Tomio FUKUDA, Tesurou IRINO
  • Publication number: 20180134842
    Abstract: Provided are a resin composition having especially good compatibility and having dielectric properties (low dielectric constant and low dielectric dissipation factor) in a high frequency range, high adhesion to conductor, excellent heat resistance, high glass transition temperature, low thermal expansion coefficient and high flame retardancy, and a prepreg, a laminate and a multilayer printed wiring board using the resin composition. Specifically, the resin composition contains (A) a polyphenylene ether derivative having an N-substituted maleimide structure-containing group and a structural unit represented by the following general formula (I) in one molecule, (B) at least one thermosetting resin selected from the group consisting of epoxy resins, cyanate resins and maleimide compounds, and (C) a styrenic thermoplastic elastomer: wherein R1 each independently represents an aliphatic hydrocarbon group having 1 to 5 carbon atoms, or a halogen atom, and x represents an integer of 0 to 4.
    Type: Application
    Filed: April 28, 2016
    Publication date: May 17, 2018
    Inventors: Yuki NAGAI, Yasuyuki MIZUNO, Tomio FUKUDA, Takao TANIGAWA, Hikari MURAI
  • Publication number: 20180127547
    Abstract: Provided are a thermosetting resin composition having especially good compatibility and having dielectric properties (low dielectric constant and low dielectric dissipation factor) in a high frequency range, high adhesion to conductor, excellent heat resistance, high glass transition temperature, low thermal expansion coefficient and high flame retardancy, and a prepreg, a laminate and a multilayer printed wiring board using the resin composition.
    Type: Application
    Filed: April 28, 2016
    Publication date: May 10, 2018
    Inventors: Takao TANIGAWA, Yasuyuki MIZUNO, Tomio FUKUDA, Yuki NAGAI, Hikari MURAI
  • Publication number: 20180002485
    Abstract: The present invention relates to a resin composition containing a compound having a maleimido group, a divalent group having at least two imido bonds and a saturated or unsaturated divalent hydrocarbon group.
    Type: Application
    Filed: January 13, 2016
    Publication date: January 4, 2018
    Applicant: Hitachi Chemical Company, LTD.
    Inventors: Takao TANIGAWA, Tetsuroh IRINO, Yuusuke KONDOU, Yuichi SHIMAYAMA, Etsuo MIZUSHIMA, Tomio FUKUDA, Yuki NAGAI, Hikari MURAI
  • Patent number: 9828466
    Abstract: A polyphenylene ether derivative having at least one N-substituted maleimide group represented by the following general formula (I) in a molecule, and a heat curable resin composition, a prepreg, a metal-clad laminate, and a multilayer printed wiring board, each of which uses the polyphenylene ether derivative: wherein R1 each independently represents a hydrogen atom, an aliphatic hydrocarbon group having 1 to 5 carbon atoms, or a halogen atom, R2 each independently represents a hydrogen atom, an aliphatic hydrocarbon group having 1 to 5 carbon atoms, or a halogen atom, A1 represents a residual group represented by a specific general formula, m is an integer of 1 or more as the number of the structural unit, and x and y each is an integer of 1 to 4.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: November 28, 2017
    Assignee: HITACHI CHEMICAL COMPANY, LTD
    Inventors: Yasuyuki Mizuno, Tomio Fukuda, Takao Tanigawa, Yuki Nagai, Hikari Murai
  • Publication number: 20170051109
    Abstract: A polyphenylene ether derivative having at least one N-substituted maleimide group represented by the following general formula (I) in a molecule, and a heat curable resin composition, a prepreg, a metal-clad laminate, and a multilayer printed wiring board, each of which uses the polyphenylene ether derivative: wherein R1 each independently represents a hydrogen atom, an aliphatic hydrocarbon group having 1 to 5 carbon atoms, or a halogen atom, R2 each independently represents a hydrogen atom, an aliphatic hydrocarbon group having 1 to 5 carbon atoms, or a halogen atom, A1 represents a residual group represented by a specific general formula, m is an integer of 1 or more as the number of the structural unit, and x and y each is an integer of 1 to 4.
    Type: Application
    Filed: April 6, 2015
    Publication date: February 23, 2017
    Applicant: Hitachi Chemical Company, Ltd.
    Inventors: Yasuyuki MIZUNO, Tomio FUKUDA, Takao TANIGAWA, Yuki NAGAI, Hikari MURAI
  • Patent number: 6706409
    Abstract: An incombustible resin composition in which a silicone oligomer, a metal hydrate and a resin material are contained as essential components, the metal hydrate is 20% by weight or more in the total solids of the resin composition is provided.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: March 16, 2004
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Nozomu Takano, Tomio Fukuda, Masato Miyatake
  • Patent number: 6696155
    Abstract: Printed wiring boards improved in the drilling processability and insulation properties are produced either by treating the surfaces of base materials or inorganic fillers with silicone oligomers having specified structures, particularly, a three-dimensionally crosslinked silicone oligomer, or by using resin varnish prepared by compounding such a silicone oligomer with a resin varnish for impregnation of the base materials, or by dipping the inorganic fillers in a solution of such a silicone oligomer for surface treatment and then directly compounding resin materials with the solution.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: February 24, 2004
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Nozomu Takano, Shigeo Sase, Tomio Fukuda, Michitoshi Arata