Patents by Inventor Yung-Ao Hsieh

Yung-Ao Hsieh 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).

  • Ligand gold bonding
    Patent number: 5384073
    Abstract: Gold sol coated with alkanethiols and alkanethiol derivatives, which provide groups on the sol available for the linking of binding moieties such as antibodies, antigens or ligands to the gold sol. Di- and tri-thiol compounds bound to gold sol also facilitate the adsorption of antibodies, antigens or ligands to the sol. The coating process, and test kits incorporating the coated sols are also included.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: January 24, 1995
    Assignee: AKZO N.V.
    Inventors: Brian L. Shigekawa, Yung-Ao Hsieh
  • Ligand gold bonding
    Patent number: 5294369
    Abstract: Gold sol coated with alkanethiols and alkanethiol derivatives, which provide groups on the sol available for the linking of binding moieties such as antibodies, antigens or ligands to the gold sol. Di- and tri-thiol compounds bound to gold sol also facilitate the adsorption of antibodies, antigens or ligands to the sol. The coating process, and test kits incorporating the coated sols are also included.
    Type: Grant
    Filed: December 5, 1990
    Date of Patent: March 15, 1994
    Assignee: AKZO N.V.
    Inventors: Brian L. Shigekawa, Yung-Ao Hsieh
  • Aminomalonyl alanine compounds as dietary sweeteners
    Patent number: 4714619
    Abstract: Compounds having relatively long shelf lives in acidic aqueous media and which are useful as sweeteners have the formula ##STR1## or are pharmaceutically acceptable salts thereof, wherein X is --OR or --NHR, or --NH.sub.2, with R being alkyl having 3-10 carbon atoms.
    Type: Grant
    Filed: May 19, 1986
    Date of Patent: December 22, 1987
    Assignee: Research Triangle Institute
    Inventors: Herbert H. Seltzman, Yung-Ao Hsieh
  • Aminomalonyl alanine compounds and use as dietary sweeteners
    Patent number: 4564528
    Abstract: Compounds having relatively long shelf lives in acidic aqueous media and which are useful as sweeteners have the formula ##STR1## or are pharmaceutically acceptable salts thereof, wherein X is --OR or --NHR, or --NH.sub.2, with R being alkyl having 3-10 carbon atoms.
    Type: Grant
    Filed: September 18, 1984
    Date of Patent: January 14, 1986
    Assignee: Research Triangle Institute
    Inventors: Herbert H. Seltzman, Yung-Ao Hsieh