Patents by Inventor Keiichi Hiromoto

Keiichi Hiromoto 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, method for coating same and coating film obtained therefrom
    Patent number: 6130281
    Abstract: A powder coating comprising a powder material comprising a film-forming resin as a main component, said powder material having a volume average particle size of not more than 30 .mu.m and containing particles having a particle size which is not more than one-fifth of said volume average particle size, in a proportion of not more than 5 wt %. When the powder material is charged by corona discharge method or frictional electrification method, sprayed on a coating object to allow electrostatic adhesion and heated, a coating film can be obtained which has a uniform thickness on a coating object having a complicated shape including non-planar parts.
    Type: Grant
    Filed: September 4, 1997
    Date of Patent: October 10, 2000
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Shinji Seo, Keiichi Hiromoto