Patents by Inventor Jay G. Liu

Jay G. Liu 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).

  • Hollow ceramic microspheres by sol-gel dehydration with improved control over size and morphology
    Patent number: 5492870
    Abstract: Hollow microspheres of ceramic material are formed by a sol-gel technique involving forming and stabilizing an emulsion of an aqueous sol of the ceramic material in an organic phase, followed by dehydration of the stabilized emulsion droplets by extraction using a water-absorbing organic liquid, to form hollow gelled spheres, and finally recovery, drying and calcination of the spheres to the final product. The separation of the emulsion formation and dehydration steps into two distinct stages results in the ultimate formation of microspheres with improved uniformity and size distribution.
    Type: Grant
    Filed: April 13, 1994
    Date of Patent: February 20, 1996
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: David L. Wilcox, Jay G. Liu, Jee-Loon Look