Patents by Inventor Yili Bai

Yili Bai 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).

  • Method for high yield and large scale extraction of paclitaxel from paclitaxel-containing material
    Patent number: 6136989
    Abstract: A method of isolating paclitaxel from pactitaxel-containing material that includes the steps of obtaining an acetone mixture of the paclitaxel-containing material, then mixing the acetone mixture with an aqueous solvent to form an aqueous supernatant and a precipitate, wherein the precipitate contains at least 3-times higher paclitaxel content than the paclitaxel extract. The acetone/water precipitation step provides a high yield of highly pure paclitaxel that is suitable for industrial scale isolation using conventional normal-phase silica chromatography steps, and the preparation of pharmaceutical compositions containing paclitaxel.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: October 24, 2000
    Assignee: Phytogen Life Sciences, Incorporated
    Inventors: Samuel Siang Kiang Foo, Yili Bai, Martin Ehlert