Patents by Inventor Ming P. Li

Ming P. Li 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).

  • Lamellar vesicles formed of cholesterol derivatives
    Patent number: 4971803
    Abstract: Closed, unilamellar vesicles are spontaneously formed by adding a cholesteryl compound substituted with a hydroxyl terminated polyethylene oxide containing 1 to 4 ethylene oxide groups to a polar liquid. Multilamellar vesicles are formed by sonicating a cholesteryl compound containing polyethylene oxide or polyamine side-chains. The vesicles can be utilized to dispense polar, non-polar or ampholphilic compounds.
    Type: Grant
    Filed: October 17, 1988
    Date of Patent: November 20, 1990
    Assignee: California Institute of Technology
    Inventors: Ming P. Li, John D. Baldeschwieler