Patents by Inventor Juanmei Zhong

Juanmei Zhong 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).

  • Ball milling process for preparing hard alloy mixture
    Patent number: 8584975
    Abstract: A ball milling process for preparing hard alloy mixture, characterized by utilizing a process of stirring ball milling, in which balls of hard alloy with diameters of 4 to 6 mm are used, the positive and negative deviation of the diameters of the alloy balls is less than or equal to 0.1 mm; tungsten carbide powders with particle sizes of 0.3 to 0.8 ?m and cobalt powders are used; ethyl alcohol is used as a grinding medium, while paraffin wax is used as a forming agent. This process of ball milling has advantages of high efficiency, low energy consumption, ease of mass production, etc. and can be widely used in the preparation of hard alloy mixture.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: November 19, 2013
    Assignee: Jiangxi Rare Earth and Rare Metals Tungsten Group Corporation
    Inventors: Yanjun Li, Juanmei Zhong, Zhifang Liu, Song Hu
  • BALL MILLING PROCESS FOR PREPARING HARD ALLOY MIXTURE
    Publication number: 20120018547
    Abstract: A ball milling process for preparing hard alloy mixture, characterized by utilizing a process of stirring ball milling, in which balls of hard alloy with diameters of 4 to 6 mm are used, the positive and negative deviation of the diameters of the alloy balls is less than or equal to 0.1 mm; tungsten carbide powders with particle sizes of 0.3 to 0.8 ?m and cobalt powders are used; ethyl alcohol is used as a grinding medium, while paraffin wax is used as a forming agent. This process of ball milling has advantages of high efficiency, low energy consumption, ease of mass production, etc. and can be widely used in the preparation of hard alloy mixture.
    Type: Application
    Filed: December 30, 2009
    Publication date: January 26, 2012
    Inventors: Yanjun Li, Juanmei Zhong, Zhifang Liu, Song Hu