Patents by Inventor Harufumi Tsuchiya

Harufumi Tsuchiya 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).

  • Coating composition
    Patent number: 5883200
    Abstract: A coating composition characterized in that it contains a compound obtained by reacting an amino resin with an organic polyphosphonic acid.
    Type: Grant
    Filed: August 22, 1996
    Date of Patent: March 16, 1999
    Assignee: Dai Nippon Toryo Co., Ltd.
    Inventors: Harufumi Tsuchiya, Hiroaki Omoto, Hiroyuki Mishima, Tsunehiko Toyoda
  • Water base coating composition
    Patent number: 5608004
    Abstract: A water base coating composition having a solid content of from 50 to 80 wt % and having a binder component dissolved or dispersed in a solvent mixture comprising water and a hydrophilic organic solvent, said binder component comprising from 30 to 95 wt % of a polyester resin obtained from an aromatic polybasic carboxylic acid or its acid anhydride and a polyhydric alcohol and having a hydroxyl value of from 100 to 280 and an acid value of from 0 to 15, and from 70 to 5 wt % of a melamine resin and/or a benzoguanamine resin.
    Type: Grant
    Filed: April 5, 1995
    Date of Patent: March 4, 1997
    Assignee: Dai Nippon Toryo Co., Ltd.
    Inventors: Tsunehiko Toyoda, Harufumi Tsuchiya, Hiroaki Omoto, Mitsuru Kohno, Maki Ii