Patents by Inventor Wilfred P.-S. Shum

Wilfred P.-S. Shum 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).

  • Process for recovering an optically active epoxy alcohol
    Patent number: 5288882
    Abstract: A method of recovering optically active epoxy alcohols from asymmetric epoxidation reaction mixture is provided whereby the epoxy alcohol may be obtained in high yield with minimal degradation of optical purity. The process is also suitable for the synthesis of useful organic sulfonate derivatives of chiral epoxy alcohols.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: February 22, 1994
    Assignee: Arco Chemical Technology, L.P.
    Inventors: T. Thomas Shih, Wilfred P.-S. Shum