Patents by Inventor Yangchun Dong

Yangchun Dong 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).

  • Long-Lasting Antibacterial Metallic Surfaces and Methods for their Production
    Publication number: 20150202842
    Abstract: A method of modifying a surface characteristic of a stainless steel or cobalt-chromium (Co—Cr) based alloy article, comprising plasma surface co-alloying the article (such as by active screen plasma surface co-alloying), with both interstitial and substitutional alloying elements at a temperature in the range of from 300 to 600° C. and at a pressure of from 100 to 1500 Pa for 1 to 50 hours in an atmosphere comprising N-containing, C-containing or N/C-containing gas.
    Type: Application
    Filed: July 2, 2013
    Publication date: July 23, 2015
    Inventors: Hanshan Dong, Xiaoying Li, Yangchun Dong, Linhai Tian