Patents by Inventor Quingjun Zheng

Quingjun Zheng 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).

  • Publication number: 20110195834
    Abstract: An ultrafine grain two-phase binderless tungsten carbide material is disclosed. The material contains, in weight percent, ditungsten carbide in the range of about 1 to about 10 percent, up to about 1.0 percent vanadium carbide and/or chromium carbide, up to about 0.2 percent cobalt, and the balance tungsten carbide, wherein the wear resistant material has a hardness of at least about 2,900 kg/mm2 and a microstructure in which the tungsten carbide average grain size is no greater than about 0.3 microns. The material has a surprisingly good combination of wear resistance and hardness. Methods of making the material and articles made from the material are also disclosed.
    Type: Application
    Filed: February 5, 2010
    Publication date: August 11, 2011
    Applicant: Kennametal, Inc.
    Inventors: Debangshu Banerjee, William Roy Huston, Quingjun Zheng, Beverly Jo Killman