Patents by Inventor Siu-Leung Lee

Siu-Leung Lee 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).

  • Chromatographic process
    Patent number: 4874520
    Abstract: A new class of chromatographic columns for reverse phase and ion exchange chromatography based on organotitanate coupling is disclosed along with separation processes using such media. The disclosed organo-titanate coupled matrices useful for reverse phase or ionic chromatographic separation can be made using titanate coupling agents in complete replacement of conventional silanating agents.
    Type: Grant
    Filed: June 23, 1988
    Date of Patent: October 17, 1989
    Assignee: Battelle Development Corporation
    Inventor: Siu-Leung Lee
  • Immobilized enzyme composites having carriers derivatized with an organotitanate
    Patent number: 4632904
    Abstract: The present invention relates to a novel immobilized enzyme composite. Suitable carriers such as controlled pore glasses or paper are coupled to various enzymes by derivatizing the carrier with an organotitanate. These composites are particularly suited for enzymatic reactions which prefer a non-aqueous, hydrophobic environment.
    Type: Grant
    Filed: December 27, 1983
    Date of Patent: December 30, 1986
    Assignee: Ciba Corning Diagnostics Corp.
    Inventor: Siu-Leung Lee