Patents by Inventor Keiji Kitada

Keiji Kitada 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).

  • Powder coating composition
    Patent number: 4151220
    Abstract: A powder coating composition containing a vehicle which comprises about 50 to about 98% by weight of a polycondensate obtained by a polycondensation of a polyol component comprising at least about 30 mol% 2-methylbutane-1,3-diol and a polycarboxylic acid component comprising at least about 50 mol% terephthalic acid and/or dimethyl terephthalate and about 2 to about 50% by weight of a crosslinking agent. The powder coating composition has a good storage stability (or powder stability) and also the boiling water resistance, the smoothness, the gloss, the flexibility, the adhesiveness, etc., in particular of a film thereof is quite excellent.
    Type: Grant
    Filed: February 17, 1977
    Date of Patent: April 24, 1979
    Assignee: Maruzen Oil Co., Ltd.
    Inventors: Yoshihide Watanabe, Keiji Kitada, Osamu Kuratani, Makoto Iriuchijima