Patents by Inventor Norito Nakahara

Norito Nakahara 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).

  • Naphthol aralkyl resins and cured products thereof
    Patent number: 5223602
    Abstract: This invention relates to naphthol aralkyl resins of the general formula (I) ##STR1## in which A is a naphthalene nucleus, R is hydrogen or methyl, and n is an integer from 0 to 15 and cured products thereof, which are highly heat- and moisture-resistant, possess excellent impact strength and other mechanical properties, and are useful for such applications as lamination, molding, casting, and adhesion.
    Type: Grant
    Filed: January 24, 1992
    Date of Patent: June 29, 1993
    Assignee: Nippon Steel Chemical Co., Ltd.
    Inventors: Masashi Kaji, Takanori Aramaki, Norito Nakahara, Yasuharu Yamada
  • Naphthol-based epoxy resins, intermediates for the same, process for preparing the same, and epoxy resin compositions containing the same
    Patent number: 5068293
    Abstract: The invention relates to naphthol-based epoxy resins of the general formula (I) ##STR1## in which A is a naphthalene nucleus, R is hydrogen or methyl, and n is an integer from 0 to 15, naphthol aralkyl resins which are intermediates for said epoxy resins, a process for the preparation of said naphthol aralkyl resins, and epoxy resin compositions containing said naphthol-based epoxy resins which are highly heat- and moisture-resistant, possess excellent impact strength and other mechanical properties, and are useful for such applications as lamination, molding, casting, and adhesion.
    Type: Grant
    Filed: August 30, 1990
    Date of Patent: November 26, 1991
    Assignee: Nippon Steel Chemical Co., Ltd.
    Inventors: Masashi Kaji, Takanori Aramaki, Norito Nakahara, Yasuharu Yamada