Patents by Inventor Luying Xun

Luying Xun 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).

  • Method of making L-dopa from L-tyrosine
    Patent number: 5837504
    Abstract: The invention is a method of making a L-dopa from L-tyrosine in the presence of an enzyme catalyst and oxygen. By starting with L-tyrosine, no variant of the L-dopa is produced and the L-dopa is stable in the presence of the enzyme catalyst. In other words, the reaction favors the L-dopa and is not reversible.
    Type: Grant
    Filed: March 4, 1998
    Date of Patent: November 17, 1998
    Assignees: Battelle Memorial Institute, The Washington State University Research Foundation
    Inventors: Luying Xun, Jang Young Lee
  • Genes and enzymes involved in the microbial degradation of pentachlorophenol
    Patent number: 5512478
    Abstract: Three purified proteins, PcpA, PcpB and PcpC, are disclosed. These proteins are involved in the breakdown of pentachlorophenol (PCP) and other halogenated phenols by the bacterium Flavobacterium sp. Strain ATCC 39723. Three cloned genes, pcpA, pcpB and pcpC, which encode these proteins are also disclosed, as well as two additional genes involved in PCP degradation, pcpD and pcpR. The purified proteins and cloned genes can be used in bioremediation applications.
    Type: Grant
    Filed: July 18, 1994
    Date of Patent: April 30, 1996
    Assignee: Idaho Research Foundation, Inc.
    Inventors: Cindy S. Orser, Luying Xun, Cleston C. Lange, II
  • Genes and enzymes involved in the microbial degradation of pentachlorophenol
    Patent number: 5364787
    Abstract: Three purified proteins, PcpA, PcpB and PcpC, are disclosed. These proteins are involved in the breakdown of pentachlorophenol and other halogenated phenols by the bacterium Flavobacterium sp. Strain ATCC 39723. Three cloned genes, pcpA, pcpB and pcpC, which encode these proteins are also disclosed. The pure proteins and cloned genes can be used in bioremediation applications.
    Type: Grant
    Filed: July 13, 1992
    Date of Patent: November 15, 1994
    Assignee: Idaho Research Foundation
    Inventors: Cindy S. Orser, Luying Xun