Patents by Inventor Chi Tak WONG

Chi Tak WONG 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).

  • Publication number: 20160129148
    Abstract: The present invention relates to a method for coating polymethylmethacrylate (PMMA)-based co-polymer beads with nano-calcium phosphate. The method includes synthesizing the PMMA-based co-polymer beads containing hydroxyl pendant group, reacting the calcium salt and phosphate solution with the hydroxyl pendant group on the PMMA-based co-polymer beads, and thickening of the nano-calcium phosphate coating on the PMMA-based co-polymer beads.
    Type: Application
    Filed: November 5, 2015
    Publication date: May 12, 2016
    Inventors: Chi Tak WONG, Sau Kuen Connie Kwok