Patents by Inventor Pi-Chu Li

Pi-Chu Li 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).

  • Manufacture method for forming antique color on metal surface
    Patent number: 8628824
    Abstract: A manufacture method for forming an antique color on a metal surface includes a metal surface treatment step, a first spraying step, a rubbing step, a second spraying step and a surface drying step. A paint used in the second spraying step is a color and light-permeable powder paint. Thus, a metal color, obtained after the rubbing step, and a color of the powder paint appear the antique color, such as an antique copper color or an antique silver color. Furthermore, the surface drying step homogenizes the powder paint and enhances protection and uniformity of the metal surface.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: January 14, 2014
    Inventor: Pi-Chu Li
  • Manufacture method for forming antique color on metal surface
    Publication number: 20130122203
    Abstract: A manufacture method for forming an antique color on a metal surface includes a metal surface treatment step, a first spraying step, a rubbing step, a second spraying step and a surface drying step. A paint used in the second spraying step is a color and light-permeable powder paint. Thus, a metal color, obtained after the rubbing step, and a color of the powder paint appear the antique color, such as an antique copper color or an antique silver color. Furthermore, the surface drying step homogenizes the powder paint and enhances protection and uniformity of the metal surface.
    Type: Application
    Filed: November 15, 2011
    Publication date: May 16, 2013
    Inventor: Pi-Chu Li