Patents by Inventor Wenbu Li

Wenbu 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).

  • Color toner and method for preparing the same
    Patent number: 8221954
    Abstract: A method of preparing a color toner by: a) preparing an anionic polymer composite emulsion comprising wax with a wax particle and nanosilica as core by in situ emulsion polymerization; b) preparing a cationic polymer composite emulsion comprising colorant with a colorant and nanosilica as core by in situ emulsion polymerization; c) agglutinating the anionic polymer composite emulsion comprising wax and the cationic polymer composite emulsion comprising colorant; and d) filtering, washing, and drying the product obtained in c). The color toner prepared by this method. The color toner has high development density, high resolution, low bottom ash, low waste rate, and low consumption, and is easy to recover and recycle.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: July 17, 2012
    Assignee: Hubei Dinglong Chemical Co., Ltd.
    Inventors: Xiaolin Xie, Guilin Xiao, Wenbu Li, Zeguan Lan
  • COLOR TONER AND METHOD FOR PREPARING THE SAME
    Publication number: 20110104606
    Abstract: A method of preparing a color toner by: a) preparing an anionic polymer composite emulsion comprising wax with a wax particle and nanosilica as core by in situ emulsion polymerization; b) preparing a cationic polymer composite emulsion comprising colorant with a colorant and nanosilica as core by in situ emulsion polymerization; c) agglutinating the anionic polymer composite emulsion comprising wax and the cationic polymer composite emulsion comprising colorant; and d) filtering, washing, and drying the product obtained in c). The color toner prepared by this method. The color toner has high development density, high resolution, low bottom ash, low waste rate, and low consumption, and is easy to recover and recycle.
    Type: Application
    Filed: July 8, 2010
    Publication date: May 5, 2011
    Inventors: Xiaolin XIE, Guilin XIAO, Wenbu LI, Zeguan LAN