Patents by Inventor Kenji Arii

Kenji Arii 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: 10160824
    Abstract: The cyanate ester compound of the present invention is obtained by cyanating a modified naphthalene formaldehyde resin.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: December 25, 2018
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Masayuki Katagiri, Go Higashihara, Kenji Arii, Yuuichi Sugano, Makoto Tsubuku
  • Patent number: 10034371
    Abstract: A resin composition for a printed wiring board including: a cyanate compound represented by the following general formula (1); and an epoxy resin,
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: July 24, 2018
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Kenji Arii, Takashi Kobayashi, Masanobu Sogame, Yoshinori Mabuchi, Sotaro Hiramatsu
  • Patent number: 9949369
    Abstract: The present invention is a cyanate ester compound represented by the following formula (1): wherein Ar represents an aromatic ring; R1 each independently represents a hydrogen atom, an alkyl group, or an aryl group; n each independently represents an integer of 1 to 3; m+n is the same as the total number of hydrogen atoms in a monovalent aromatic group containing the aromatic ring and the hydrogen atoms; R2 represents a hydrogen atom (excluding a case where Ar represents a benzene ring; n each represents 1; R1 represents a hydrogen atom; m each represents 4, and a cyanate group is bonded to the benzene ring in the 4-position relative to an adamantyl group), or an alkyl group having 1 to 4 carbon atoms; and R3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: April 17, 2018
    Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Masayuki Katagiri, Keita Tokuzumi, Makoto Tsubuku, Tomoo Tsujimoto, Kenji Arii, Takashi Kobayashi, Masanobu Sogame, Yoshinori Mabuchi, Sotaro Hiramatsu
  • Publication number: 20160345433
    Abstract: A resin composition for a printed wiring board including: a cyanate compound represented by the following general formula (1); and an epoxy resin,
    Type: Application
    Filed: February 3, 2015
    Publication date: November 24, 2016
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Kenji ARII, Takashi KOBAYASHI, Masanobu SOGAME, Yoshinori MABUCHI, Sotaro HIRAMATSU
  • Publication number: 20160262263
    Abstract: The present invention is a cyanate ester compound represented by the following formula (1): wherein Ar represents an aromatic ring; R1 each independently represents a hydrogen atom, an alkyl group, or an aryl group; n each independently represents an integer of 1 to 3; m+n is the same as the total number of hydrogen atoms in a monovalent aromatic group containing the aromatic ring and the hydrogen atoms; R2 represents a hydrogen atom (excluding a case where Ar represents a benzene ring; n each represents 1; R1 represents a hydrogen atom; m each represents 4, and a cyanate group is bonded to the benzene ring in the 4-position relative to an adamantyl group), or an alkyl group having 1 to 4 carbon atoms; and R3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
    Type: Application
    Filed: October 24, 2014
    Publication date: September 8, 2016
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Masayuki KATAGIRI, Keita TOKUZUMI, Makoto TSUBUKU, Tomoo TSUJIMOTO, Kenji ARII, Takashi KOBAYASHI, Masanobu SOGAME, Yoshinori MABUCHI, Sotaro HIRAMATSU
  • Publication number: 20160237246
    Abstract: It is an object of the present invention to provide a resin composition which can realize a printed wired board having not only low water-absorbing property but also excellent heat resistance after moisture absorption, flame retardancy, and solvent solubility. It is another object of the present invention to provide a prepreg and a monolayer or laminate which use the resin composition, and a metal foil clad laminate and a printed wired board which use the prepreg. A resin composition of the present invention contains one or two or more cyanate ester compounds (A) represented by the following formula (1) and an epoxy resin (B): wherein R1, R2, R3, and R4 represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, and may be the same or different from each other; and n represents an integer of 1 to 50.
    Type: Application
    Filed: October 20, 2014
    Publication date: August 18, 2016
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Kenji ARII, Takashi KOBAYASHI, Masanobu SOGAME, Yoshinori MABUCHI, Hiroyuki MISHIMA
  • Publication number: 20160125972
    Abstract: The resin composition of the present invention comprises a cyanate ester compound (A) obtained by cyanating a modified naphthalene formaldehyde resin, and an epoxy resin (B).
    Type: Application
    Filed: June 16, 2014
    Publication date: May 5, 2016
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Kenji ARII, Takashi KOBAYASHI, Masanobu SOGAME, Yoshinori MABUCHI, Hiroyuki MISHIMA
  • Publication number: 20160115271
    Abstract: The cyanate ester compound of the present invention is obtained by cyanating a modified naphthalene formaldehyde resin.
    Type: Application
    Filed: June 16, 2014
    Publication date: April 28, 2016
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Masayuki KATAGIRI, Go HIGASHIHARA, Kenji ARII, Yuuichi SUGANO, Makoto TSUBUKU
  • Publication number: 20130101863
    Abstract: A resin composition that can allow allowing a drying step after impregnation coating of a prepreg and lamination pressing performed at low temperatures in a short time and, at the same time, can maintain storage stability of the prepreg, comprises (A) an imidazole compound represented by formula (I), (B) an epoxy compound, and (C1) a cyanate compound or (C2) a BT resin. R1 and R2 represent an alkyl group, an alkenyl group an alkoxyl group, or a substituted or unsubstituted aromatic substituent; and R3 represents hydrogen, an alkyl group, an alkenyl group, an alkoxy group, a substituted or unsubstituted aromatic substituent, or a halogen group.
    Type: Application
    Filed: April 19, 2011
    Publication date: April 25, 2013
    Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
    Inventors: Yoshinori Mabuchi, Masanobu Sogame, Kenji Arii, Hajime Ohtsuka, Emi Fukasawa