Patents by Inventor Toshiya Koike

Toshiya Koike 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).

  • Method for recycling a paint recovery effluent
    Patent number: 5492626
    Abstract: The object of the present invention is reuse of the filtrate of a paint mist-cleaning water mixture as cleaning water without reduction in concentration efficiency. According to the present invention, a waste paint-cleaning water mixture 2 available on trapping a water-based paint mist in cleaning water 1 is concentrated to recover the paint and the aqueous phase is recycled as cleaning water. In this system, the cleaning water prepared by reusing the aqueous phase is adjusted to an acid value of not greater than 10 and a pH value of 7.0 to 9.0. Controlling the amount of low molecular acid components in the aqueous phase in this manner prevents an abnormal viscosity increase in the filtration-concentration of the waste paint-cleaning water mixture.
    Type: Grant
    Filed: May 10, 1994
    Date of Patent: February 20, 1996
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Kazuo Uenoyama, Tetsuro Kajino, Toshihiro Okai, Takayuki Shibata, Toshiya Koike