Patents by Inventor Xiao-jie Tong

Xiao-jie Tong 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).

  • Production of taxol and taxanes
    Patent number: 6939978
    Abstract: A high yield, economical process for purifying taxanes from yew biomass is disclosed. The process does not require initial liquid:liquid portioning of the crude extract to separate highly polar substances. The organic solvent extract of the biomass is adsorbed onto and selectively desorbed from an adsorption resin to provide a taxane enriched eluate. Substantially pure individual taxanes may be further isolated from the eluate by hydrophobic-interaction chromatography.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: September 6, 2005
    Assignee: Purdue Research Foundation
    Inventors: Ching-jer Chang, Xiao-jie Tong
  • Production of taxol and taxanes
    Publication number: 20030013899
    Abstract: A high yield, economical process for purifying taxanes from yew biomass is disclosed. The process does not require initial liquid:liquid portioning of the crude extract to separate highly polar substances. The organic solvent extract of the biomass is adsorbed onto and selectively desorbed from an adsorption resin to provide a taxane enriched eluate. Substantially pure individual taxanes may be further isolated from the eluate by hydrophobic-interaction chromatography.
    Type: Application
    Filed: July 10, 2002
    Publication date: January 16, 2003
    Inventors: Ching-jer Chang, Xiao-jie Tong