Patents by Inventor Man-Ying L. Wong

Man-Ying L. Wong 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).

  • D-arabinitol dehydrogenase from Candida tropicalis ATCC 750 or Candida shehatae
    Patent number: 5451517
    Abstract: A D-arabinitol dehydrogenase enzyme is disclosed. The enzyme is capable of catalyzing the oxidation of D-arabinitol and substantially incapable of catalyzing the oxidation of D-mannitol and is substantially free of other enzymes capable of oxidizing D-mannitol. Also disclosed are methods for determining D-arabinitol. In one embodiment the method comprises the steps of providing in combination (1) a medium suspected of containing D-arabinitol and (2) a D-arabinitol dehydrogenase enzyme and examining the medium for the product of the oxidation of the D-arabinitol. The enzyme utilized is capable of catalyzing the oxidation of D-arabinitol and substantially incapable of catalyzing the oxidation of D-mannitol. Kits for conducting the present method are also disclosed. The D-arabinitol dehydrogenase in purified form has all of the characteristics of a D-arabinitol dehydrogenase which is obtainable from Candida tropicalis ATCC 750 or Candida shehatae.
    Type: Grant
    Filed: March 3, 1995
    Date of Patent: September 19, 1995
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Charles G. Miyada, Arthur C. Switchenko, Melanie W. Quong, Man-Ying L. Wong