Patents by Inventor Tadashi Ikushima

Tadashi Ikushima 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).

  • Curing agent for epoxy resin
    Patent number: 5107036
    Abstract: A curing agent for an epoxy resin comprising (A) a polyhydric phenol obtainable by condensing a phenol compound and a hydroxybenzaldehyde and (B) a dihydric phenol, which gives a cured material of an epoxy resin having improved moisture and heat resistance and a small coefficient of linear thermal expansion.
    Type: Grant
    Filed: October 24, 1990
    Date of Patent: April 21, 1992
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Nobuyuki Nakajima, Shuichi Kanagawa, Hideshi Sakamoto, Noriaki Saito, Tadashi Ikushima