Patents by Inventor Teppei Nishikawa

Teppei Nishikawa 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).

  • Carboxyl resin, hardening composition containing carboxyl resin, and hardened material thereof
    Patent number: 8148047
    Abstract: A carboxyl resin according to the present invention is obtained by a process including following steps: epoxy groups on a resin (a) having two or more epoxy groups in one molecule is made to react with 0.3-0.85 mol of a monocarboxylic acid (b) per one epoxy-group equivalent weight to obtain a reaction product (c); the epoxy group or groups on the reaction product (c) are made to react with 0.15-0.95 mol of a polybasic acid (d) per one epoxy-group equivalent weight to obtain a reaction product (e); and the epoxy group or groups on the reaction product (e) are further made to react with 1.0-5.0 mol of a monocarboxylic acid (f) per one epoxy-group equivalent weight. The carboxyl resin thus obtained has an acid value within a range from 20 to 200 mgKOH/g and is soluble in an organic solvent.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: April 3, 2012
    Assignee: Goo Chemical Company, Ltd.
    Inventors: Koichi Ikegami, Noboru Kohiyama, Teppei Nishikawa, Michiya Higuchi, Nobuhito Hamada, Hiroko Daido, Chieko Inui, Tatsuya Kubo
  • CARBOXYL RESIN, HARDENING COMPOSITION CONTAINING CARBOXYL RESIN, AND HARDENED MATERIAL THEREOF
    Publication number: 20110082229
    Abstract: A carboxyl resin according to the present invention is obtained by a process including following steps: epoxy groups on a resin (a) having two or more epoxy groups in one molecule is made to react with 0.3-0.85 mol of a monocarboxylic acid (b) per one epoxy-group equivalent weight to obtain a reaction product (c); the epoxy group or groups on the reaction product (c) are made to react with 0.15-0.95 mol of a polybasic acid (d) per one epoxy-group equivalent weight to obtain a reaction product (e); and the epoxy group or groups on the reaction product (e) are further made to react with 1.0-5.0 mol of a monocarboxylic acid (f) per one epoxy-group equivalent weight. The carboxyl resin thus obtained has an acid value within a range from 20 to 200 mgKOH/g and is soluble in an organic solvent.
    Type: Application
    Filed: February 20, 2009
    Publication date: April 7, 2011
    Applicant: GOO CHEMICAL CO., LTD.
    Inventors: Koichi Ikegami, Noboru Kohiyama, Teppei Nishikawa, Michiya Higuchi, Nobuhito Hamada, Hiroko Daido, Chieko Inui, Tatsuya Kubo