Patents by Inventor Kazuyoshi Ihida

Kazuyoshi Ihida 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).

  • Process for producing curable esterified alkyd resins
    Patent number: 4248997
    Abstract: A process for the production of a final curable resin comprising the steps of reacting a cyclopentadiene type compound with a compound having a double bond and hydroxyl group in the molecule to obtain a hydroxyl group-containing resin, reacting the thus obtained resinous polyol and at least one other polyol with a polybasic acid to obtain a hydroxyl group-containing alkyd resin and then esterifying the alkyd resin with an .alpha.,.beta.-unsaturated carboxylic acid thereby obtain the final curable resin. In one embodiment, this invention relates to said final curable resins and also to curable coating compositions containing same.
    Type: Grant
    Filed: July 30, 1979
    Date of Patent: February 3, 1981
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventor: Kazuyoshi Ihida
  • Process for producing curable coating resins
    Patent number: 4233420
    Abstract: A process for preparing a curable coating resin comprising the steps of hydrogenating selectively the double bonds of a resin produced from a five-membered cyclic compound such as dicyclopentadiene and an unsaturated hydroxyl group-containing compound such as allyl alcohol and then esterifying the thus hydrogenated hydroxyl group-containing resin with acrylic and/or methacrylic acid thereby to obtain a curable coating resin; and a curable coating resin obtained by said process.
    Type: Grant
    Filed: April 18, 1979
    Date of Patent: November 11, 1980
    Assignees: Nippon Oil Co., Ltd., Toyo Ink Manufacturing Co., Ltd.
    Inventors: Shozo Tsuchiya, Hideo Hayashi, Makoto Sasaki, Kiyoshi Goto, Kazuyoshi Ihida
  • Process for producing curable coating resins
    Patent number: 4176146
    Abstract: A process for preparing a curable coating resin comprising the steps of hydrogenating selectively the double bonds of a resin produced from a five-membered cyclic compound such as dicyclopentadiene and an unsaturated hydroxyl group-containing compound such as allyl alcohol and then esterifying the thus hydrogenated hydroxyl group-containing resin with acrylic and/or methacrylic acid thereby to obtain a curable coating resin; and a curable coating resin obtained by said process.
    Type: Grant
    Filed: December 14, 1977
    Date of Patent: November 27, 1979
    Assignees: Nippon Oil Co., Ltd., Toyo Ink Manufacturing Co., Ltd.
    Inventors: Shozo Tsuchiya, Hideo Hayashi, Makoto Sasaki, Kiyoshi Goto, Kazuyoshi Ihida