Patents by Inventor Alexander W. Chan

Alexander W. Chan 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).

  • Microbiological method for producing ascorbic acid
    Publication number: 20040086984
    Abstract: There is provided a microbiological one-step method for the manufacture of ascorbic acid. The method comprises use of the operon expressing 2-ketogluconate dehydrogenase in naturally occurring microorganisms and microorganisms transformed with DNA encoding the 2-ketogluconate dehydrogenase gene. Ascorbic acid is obtained from culturing microorganisms expressing 2-ketogluconate dehydrogenase.
    Type: Application
    Filed: October 31, 2002
    Publication date: May 6, 2004
    Inventors: Clarence I. Kado, Catherine J. Pujol, Alexander W. Chan