Patents by Inventor Minoru Kakitani

Minoru Kakitani 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).

  • Publication number: 20240032209
    Abstract: Provided are a maleimide resin composition containing (A) one or more selected from the group consisting of a maleimide compound having two or more N-substituted maleimide groups and a derivative thereof, (B) a modified conjugated diene polymer, and (C) a thermoplastic elastomer other than the above component (B), wherein the component (B) is one resulting from modification of (b1) a conjugated diene polymer having a vinyl group in the side chain with (b2) a maleimide compound having two or more N-substituted maleimide groups; and a prepreg, a resin film, a laminated board, a printed wiring board and a semiconductor package, each using the maleimide resin composition.
    Type: Application
    Filed: November 16, 2021
    Publication date: January 25, 2024
    Inventors: Chihiro HAYASHI, Minoru KAKITANI, Takao TANIGAWA, Ryuji AKEBI, Naoyoshi SATO, Akira HORIE
  • Publication number: 20230391940
    Abstract: The present invention relates to a maleimide resin composition containing (A) one or more selected from the group consisting of a maleimide compound having one or more N-substituted maleimide groups and a derivative thereof, and (B) a polymer having a hydrocarbon chain or a polyether chain in a main chain thereof, wherein the component (A) dissolves in an alcohol-based solvent, a ketone-based solvent, an aromatic hydrocarbon-based solvent, an ester-based solvent, or a nitrogen atom-containing solvent in an amount of 30% by mass or more at 25° C. The present invention also relates to a prepreg, a laminate, a resin film, a printed wiring board, and a semiconductor package that are obtained by using the maleimide resin composition.
    Type: Application
    Filed: November 16, 2021
    Publication date: December 7, 2023
    Inventors: Naoyoshi SATO, Shuji GOZU, Minoru KAKITANI, Takao TANIGAWA, Ryuji AKEBI, Chihiro HAYASHI
  • Publication number: 20230392001
    Abstract: The present invention relates to a maleimide resin composition containing (A) one or more selected from the group consisting of a maleimide compound having one or more N-substituted maleimide groups and a derivative thereof; and (B) a polymer having a hydrocarbon chain or a polyether chain in a main chain thereof, wherein the component (A) contains (A1) a maleimide compound having one or more N-substituted maleimide groups and a molecular weight of less than 600 and (A2) a maleimide compound having one or more N-substituted maleimide groups and a molecular weight of 600 or more. The present invention also relates to a prepreg, a laminated board, a resin film, a printed wiring board, and a semiconductor package that are obtained by using the maleimide resin composition.
    Type: Application
    Filed: November 16, 2021
    Publication date: December 7, 2023
    Inventors: Naoyoshi SATO, Shuji GOZU, Minoru KAKITANI, Takao TANIGAWA, Ryuji AKEBI, Chihiro HAYASHI
  • Patent number: 11745482
    Abstract: The present disclosure relates to a fluororesin substrate laminate for a high-frequency circuit, the fluororesin substrate laminate including a fluororesin substrate and an adhesive layer provided on the fluororesin substrate, wherein the adhesive layer includes a resin composition containing: (A) a maleimide compound having a saturated or unsaturated divalent hydrocarbon group; and (B) an aromatic maleimide compound.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: September 5, 2023
    Assignee: RESONAC CORPORATION
    Inventors: Kosuke Murai, Takao Tanigawa, Minoru Kakitani, Makoto Yanagida, Mami Shimada
  • Patent number: 11691389
    Abstract: The present invention relates to a resin composition including an acrylic polymer (A) and a thermosetting resin (B), wherein a phase separation structure of a first phase containing the acrylic polymer (A) and a second phase containing the thermosetting resin (B) is formed, and an average domain size of the second phase is 20 ?m or less.
    Type: Grant
    Filed: December 2, 2020
    Date of Patent: July 4, 2023
    Assignee: RESONAC CORPORATION
    Inventors: Yuya Hirayama, Takayo Kitajima, Kenichi Tomioka, Keisuke Kushida, Minoru Kakitani, Hiroshi Shimizu
  • Patent number: 11377546
    Abstract: The present invention relates to a resin composition comprising an (A) maleimide compound having a saturated or unsaturated divalent hydrocarbon group, and a thermoplastic resin.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: July 5, 2022
    Assignee: SHOWA DENKO MATERIALS CO., LTD.
    Inventors: Takao Tanigawa, Tetsuroh Irino, Minoru Kakitani, Kouji Morita
  • Patent number: 11136454
    Abstract: The present invention provides a thermosetting resin composition containing (A) a maleimide compound, (B) an epoxy resin having at least two epoxy groups in one molecule, (C) a copolymer resin having a structural unit derived from an aromatic vinyl compound and a structural unit derived from a maleic anhydride, (D) a silica treated with an aminosilane coupling agent, and (E) a flame retardant dispersion.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: October 5, 2021
    Assignee: Showa Denko Materials Co., Ltd.
    Inventors: Keisuke Kushida, Hiroshi Shimizu, Minoru Kakitani, Yoshikatsu Shiraokawa, Tatsunori Kaneko
  • Publication number: 20210187923
    Abstract: The present disclosure relates to a fluororesin substrate laminate for a high-frequency circuit, the fluororesin substrate laminate including a fluororesin substrate and an adhesive layer provided on the fluororesin substrate, wherein the adhesive layer includes a resin composition containing: (A) a maleimide compound having a saturated or unsaturated divalent hydrocarbon group; and (B) an aromatic maleimide compound.
    Type: Application
    Filed: October 27, 2020
    Publication date: June 24, 2021
    Inventors: Kosuke MURAI, Takao TANIGAWA, Minoru KAKITANI, Makoto YANAGIDA, Mami SHIMADA
  • Publication number: 20210079172
    Abstract: The present invention relates to a resin composition including an acrylic polymer (A) and a thermosetting resin (B), wherein a phase separation structure of a first phase containing the acrylic polymer (A) and a second phase containing the thermosetting resin (B) is formed, and an average domain size of the second phase is 20 ?m or less.
    Type: Application
    Filed: December 2, 2020
    Publication date: March 18, 2021
    Inventors: Yuya HIRAYAMA, Takayo KITAJIMA, Kenichi TOMIOKA, Keisuke KUSHIDA, Minoru KAKITANI, Hiroshi SHIMIZU
  • Patent number: 10940674
    Abstract: The present invention provides a resin varnish, a prepreg, a laminate and a printed wiring board, using a thermosetting resin composition having high heat resistance, low relative permittivity, high metal foil adhesion, high glass transition temperature and low thermal expansion and excellent in moldability and platability. Specifically, the resin varnish contains (A) a maleimide compound, (B) an epoxy resin, (C) a copolymer resin having a structural unit derived from an aromatic vinyl compound and a structural unit derived from a maleic anhydride, (D) a silica treated with an aminosilane coupling agent, and (G) an organic solvent.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: March 9, 2021
    Assignee: SHOWA DENKO MATERIALS CO., LTD.
    Inventors: Yoshikatsu Shiraokawa, Minoru Kakitani, Hiroshi Shimizu, Keisuke Kushida, Tatsunori Kaneko
  • Patent number: 10907029
    Abstract: The present invention relates to a resin composition containing (A) a compound having a maleimide group, a divalent group having at least two imide bonds, and a saturated or unsaturated divalent hydrocarbon group and (B) a halogen-free flame retardant.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: February 2, 2021
    Assignee: Showa Denko Materials Co., Ltd.
    Inventors: Takao Tanigawa, Tetsuroh Irino, Minoru Kakitani, Kouji Morita
  • 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: 20200002526
    Abstract: The present invention provides a thermosetting resin composition containing (A) a maleimide compound, (B) an epoxy resin having at least two epoxy groups in one molecule, (C) a copolymer resin having a structural unit derived from an aromatic vinyl compound and a structural unit derived from a maleic anhydride, (D) a silica treated with an aminosilane coupling agent, and (E) a flame retardant dispersion.
    Type: Application
    Filed: December 7, 2016
    Publication date: January 2, 2020
    Inventors: Keisuke KUSHIDA, Hiroshi SHIMIZU, Minoru KAKITANI, Yoshikatsu SHIRAOKAWA, Tatsunori KANEKO
  • Publication number: 20190338093
    Abstract: The present invention provides a resin varnish, a prepreg, a laminate and a printed wiring board, using a thermosetting resin composition having high heat resistance, low relative permittivity, high metal foil adhesion, high glass transition temperature and low thermal expansion and excellent in moldability and platability. Specifically, the resin varnish contains (A) a maleimide compound, (B) an epoxy resin, (C) a copolymer resin having a structural unit derived from an aromatic vinyl compound and a structural unit derived from a maleic anhydride, (D) a silica treated with an aminosilane coupling agent, and (G) an organic solvent.
    Type: Application
    Filed: December 7, 2016
    Publication date: November 7, 2019
    Inventors: Yoshikatsu SHIRAOKAWA, Minoru KAKITANI, Hiroshi SHIMIZU, Keisuke KUSHIDA, Tatsunori KANEKO
  • Publication number: 20190241717
    Abstract: The present invention relates to a resin composition containing (A) a compound having a maleimide group, a divalent group having at least two imide bonds, and a saturated or unsaturated divalent hydrocarbon group and (B) a halogen-free flame retardant.
    Type: Application
    Filed: July 19, 2017
    Publication date: August 8, 2019
    Applicant: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Takao TANIGAWA, Tetsuroh IRINO, Minoru KAKITANI, Kouji MORITA
  • Publication number: 20190241729
    Abstract: The present invention relates to a resin composition comprising an (A) maleimide compound having a saturated or unsaturated divalent hydrocarbon group, and a thermoplastic resin.
    Type: Application
    Filed: July 18, 2017
    Publication date: August 8, 2019
    Applicant: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Takao TANIGAWA, Tetsuroh IRINO, Minoru KAKITANI, Kouji MORITA
  • 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: 20190161586
    Abstract: The present invention relates to a resin composition including an acrylic polymer (A) and a thermosetting resin (B), wherein a phase separation structure of a first phase containing the acrylic polymer (A) and a second phase containing the thermosetting resin (B) is formed, and an average domain size of the second phase is 20 ?m or less.
    Type: Application
    Filed: May 15, 2017
    Publication date: May 30, 2019
    Inventors: Yuya HIRAYAMA, Takayo KITAJIMA, Kenichi TOMIOKA, Keisuke KUSHIDA, Minoru KAKITANI, Hiroshi SHIMIZU
  • Patent number: 7538150
    Abstract: The present invention discloses a thermosetting resin composition which comprises (A) 35 to 75 parts by weight of a thermosetting resin comprising a compound having a hydrobenzoxazine ring as a main component, (B) 10 to 25 parts by weight of a polycondensation product of a phenol, a compound having a triazine ring and an aldehyde, and (C) 10 to 45 parts by weight of an epoxy resin, based on 100 parts by weight of the total amount of organic solid components of Components (A), (B) and (C), and (i) a bisphenol F epoxy resin having a weight-average molecular weight of 1,000 to 3,000, or (ii) a mixed epoxy resin of bisphenol F epoxy resin and bisphenol A epoxy resin having a weight average molecular weight of 1,000 to 3,000, is contained in Component (C) in an amount of 0 to 100% by weight of Component (C); and a prepreg, a laminated board for a wiring board and a wiring board using the same.
    Type: Grant
    Filed: September 7, 2005
    Date of Patent: May 26, 2009
    Assignee: Hitachi Chemical Company, Ltd
    Inventors: Kenichi Oohori, Yoshihiro Nakamura, Hikari Murai, Yoshiyuki Takeda, Yasuyuki Hirai, Shinichi Kamoshida, Minoru Kakitani, Norihiro Abe, Syunichi Numata, Teruki Aizawa, Ken Nanaumi
  • Publication number: 20060008632
    Abstract: The present invention discloses a thermosetting resin composition which comprises (A) 35 to 75 parts by weight of a thermosetting resin comprising a compound having a hydrobenzoxazine ring as a main component, (B) 10 to 25 parts by weight of a polycondensation product of a phenol, a compound having a triazine ring and an aldehyde, and (C) 10 to 45 parts by weight of an epoxy resin, based on 100 parts by weight of the total amount of organic solid components of Components (A), (B) and (C), and (i) a bisphenol F epoxy resin having a weight-average molecular weight of 1,000 to 3,000, or (ii) a mixed epoxy resin of bisphenol F epoxy resin and bisphenol A epoxy resin having a weight average molecular weight of 1,000 to 3,000, is contained in Component (C) in an amount of 0 to 100% by weight of Component (C); and a prepreg, a laminated board for a wiring board and a wiring board using the same.
    Type: Application
    Filed: September 7, 2005
    Publication date: January 12, 2006
    Inventors: Kenichi Oohori, Yoshihiro Nakamura, Hikari Murai, Yoshiyuki Takeda, Yasuyuki Hirai, Shinichi Kamoshida, Minoru Kakitani, Norihiro Abe, Syunichi Numata, Teruki Aizawa, Ken Nanaumi