Patents by Inventor Szu-Ching Hsiao

Szu-Ching Hsiao 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).

  • Functionalized magnetizable microspheres and preparation thereof
    Patent number: 7553542
    Abstract: The present invention discloses a two-stage process for preparing functionalized magnetizable microspheres. The first stage includes forming an inner shell of styrene polymer or styrene copolymer around magnetizable nano particles having a monolayer of a non-water-soluble dispersing agent coated thereon. The second stage includes forming an outer shell of styrene polymer or styrene copolymer with sulfate (SO4?) bounded thereto around the inner shell by free radical polymerization. Preferably, nano particles of a noble metal are deposited on the surface of the outer shell. The magnetizable microspheres prepared by the process of the present invention have a size of 100-1000 nm, and the thickness ratio of the inner shell to the outer shell ranges from 10:1 to 1:10.
    Type: Grant
    Filed: August 13, 2007
    Date of Patent: June 30, 2009
    Assignee: National Defense University
    Inventors: Jinn-Luh Ou, Yuh Sung, Chang-Ping Chang, Ming-Der Ger, Szu-Ching Hsiao, Yan-Cheng Chen
  • Functionalized magnetizable microspheres and preparation thereof
    Publication number: 20080081193
    Abstract: The present invention discloses a two-stage process for preparing functionalized magnetizable microspheres. The first stage includes forming an inner shell of styrene polymer or styrene copolymer around magnetizable nano particles having a monolayer of a non-water-soluble dispersing agent coated thereon. The second stage includes forming an outer shell of styrene polymer or styrene copolymer with sulfate (SO4?) bounded thereto around the inner shell by free radical polymerization. Preferably, nano particles of a noble metal are deposited on the surface of the outer shell. The magnetizable microspheres prepared by the process of the present invention have a size of 100-1000 nm, and the thickness ratio of the inner shell to the outer shell ranges from 10:1 to 1:10.
    Type: Application
    Filed: August 13, 2007
    Publication date: April 3, 2008
    Applicant: NATIONAL DEFENSE UNIVERSITY
    Inventors: Jinn-Luh Ou, Yuh Sung, Chang-Ping Chang, Ming-Der Ger, Szu-Ching Hsiao, Yan-Cheng Chen