Patents by Inventor Hironao Fukuoka

Hironao Fukuoka 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).

  • Cyanate ester compound, flame-retardant resin composition, and cured product thereof
    Patent number: 7528220
    Abstract: A cyanate ester compound represented by the formula (1), wherein Ar2 represents a phenylene group, a naphthylene group or a biphenylene group, Ar1 represents a naphthylene group or a biphenylene group when Ar2 is a phenylene group, or Ar1 represents a phenylene group, a naphthylene group or a biphenylene group when Ar2 is a naphthylene group or a biphenylene group, Rx represents all substituents of Ar1, each Rx is the same or different and represents hydrogen, an alkyl group or an aryl group, Ry represents all substituents of Ar2, each Ry is the same or different and represents hydrogen, an alkyl group or an aryl group, and n is an integer of 1 to 50.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: May 5, 2009
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Yuuichi Sugano, Masayuki Katagiri, Daisuke Ohno, Seiji Kita, Masanobu Sogame, Hironao Fukuoka, Masayoshi Ueno
  • Resin composition, prepreg and laminate using the same
    Publication number: 20090110938
    Abstract: A cyanate ester resin composition for a printed wiring board material containing a cyanate ester resin component A comprising a cyanate ester compound represented by the formula (1) and/or an oligomer thereof, and at least one component B selected from the group consisting of an epoxy resin and a maleimide compound, which resin composition is improved in heat resistance and heat resistance after moisture absorption, is excellent in mechanical properties such as elastic modulus and has flame retardancy without a halogen compound, and a prepreg and a laminate each of which uses the resin composition defined as above wherein the resin composition contains the component A and at least the epoxy resin as the component B.
    Type: Application
    Filed: October 28, 2008
    Publication date: April 30, 2009
    Inventors: Yoshimasa Nishimura, Masanobu Sogame, Hironao Fukuoka, Yuuichi Sugano, Masayuki Katagiri
  • Novel cyanate ester compound, flame-retardant resin composition, and cured product thereof
    Publication number: 20060084787
    Abstract: A cyanate ester compound represented by the formula (1), wherein Ar2 represents a phenylene group, a naphthylene group or a biphenylene group, Ar1 represents a naphthylene group or a biphenylene group when Ar2 is a phenylene group, or Ar1 represents a phenylene group, a naphthylene group or a biphenylene group when Ar2 is a naphthylene group or a biphenylene group, Rx represents all substituents of Ar1, each Rx is the same or different and represents hydrogen, an alkyl group or an aryl group, Ry represents all substituents of Ar2, each Ry is the same or different and represents hydrogen, an alkyl group or an aryl group, and n is an integer of 1 to 50.
    Type: Application
    Filed: November 10, 2005
    Publication date: April 20, 2006
    Inventors: Yuuichi Sugano, Masayuki Katagiri, Daisuke Ohno, Seiji Kita, Masanobu Sogame, Hironao Fukuoka, Masayoshi Ueno