Patents by Inventor Luoqing Yang

Luoqing Yang 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).

  • Dye and method for making same
    Patent number: 5210316
    Abstract: The present invention provides a modified turmeric. The modified turmeric is a phosphorylated turmeric that results in a structure having greatly improved stability in the presence of light, and solubility in the presence of a solution. The invention produces a natural dye for use as a substitute for yelIow dye No. 5.
    Type: Grant
    Filed: February 4, 1991
    Date of Patent: May 11, 1993
    Assignee: University of Arkansas
    Inventors: Luoqing Yang, Ron Buescher