Patents by Inventor Masayoshi Hanabusa

Masayoshi Hanabusa 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).

  • Epoxy resin, epoxy resin composition thereof and cured product thereof
    Patent number: 7332557
    Abstract: An epoxy resin represented by general formula (2), wherein R1-R4 indicate a hydrocarbon group of carbon number 1-6, n is 0 or integer of 1 or more and X is a bond or the following general formula wherein R5-R6 indicate a hydrogen atom or hydrocarbon group of carbon number 1-6, obtained by reacting an aromatic compound represented by general formula (1) and epihalohydrine, wherein R1-R4 and X are as identified herein, having molecular weight distribution comprising, content of n=0 component in the epoxy resin represented by general formula (2) is 60% or less and epoxy equivalent is 250 g/eq or over.
    Type: Grant
    Filed: January 13, 2004
    Date of Patent: February 19, 2008
    Assignee: Tohto Kasei Co., Ltd.
    Inventors: Shuya Shinohara, Masayoshi Hanabusa, Nobuhisa Saito, Hiroshi Nakanishi
  • Epoxy resin, epoxy resin composition thereof and cured product thereof
    Publication number: 20040176563
    Abstract: An epoxy resin represented by general formula (2), 1
    Type: Application
    Filed: January 13, 2004
    Publication date: September 9, 2004
    Inventors: Shuya Shinohara, Masayoshi Hanabusa, Nobuhisa Saito, Hiroshi Nakanishi