Patents by Inventor Ryoii Ishihara

Ryoii Ishihara 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).

  • Radiation curable primer coating compositions
    Patent number: 5279864
    Abstract: A radiation curable primer coating composition is provided comprising (a) a reaction product of an epoxide compound and an ethylenically unsaturated monocarboxylic acid, (b) a compound of the formula: ##STR1## wherein R is hydrogen atom or methyl, A is a C.sub.2 -C.sub.4 alkylene group, and n is 0, 1 or 2; and (c) a compound having at least one epoxy group per molecule.The composition may be applied onto a steel substrate and cured by the irradiation of an actinic radiation for improving properties of subsequently applied polyolefin coatings thereon.
    Type: Grant
    Filed: August 21, 1991
    Date of Patent: January 18, 1994
    Assignees: Sumitomo Metal Industries, Ltd., Nippon Paint Co., Ltd.
    Inventors: Masakazu Ohkita, Tetsuzo Arai, Manasori Yoshiiwa, Koichi Yamada, Iwao Sumiyoshi, Ryoii Ishihara