Patents by Inventor Hengchang Xu

Hengchang Xu 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).

  • Glass fillers for composites
    Patent number: 9642781
    Abstract: The invention relates to a particulate glass filler wherein glass particles of 0.2 to 1 ?m mean particle size are connected with other particles, the connection being effected by the glass material itself. More precisely particulate glass filler comprising glass particles, wherein the particles contains centrally located macro glass particles and on the outer surface located micro glass particles wherein the macro and micro glass particles are connected by the material of said particles. Further the invention relates to a method for manufacturing the glass particles and the particulate glass filler comprising said glass particles. It also relates to a composite or dental material comprising the above particulate glass filler.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: May 9, 2017
    Assignee: HERAEUS KULZER GMBH
    Inventors: Wenling Yang, Hengchang Xu, Andreas Utterodt
  • Glass Fillers for Composites
    Publication number: 20160081886
    Abstract: The invention relates to a particulate glass filler wherein glass particles of 0.2 to 1 ?m mean particle size are connected with other particles, the connection being effected by the glass material itself. More precisely particulate glass filler comprising glass particles, wherein the particles contains centrally located macro glass particles and on the outer surface located micro glass particles wherein the macro and micro glass particles are connected by the material of said particles. Further the invention relates to a method for manufacturing the glass particles and the particulate glass filler comprising said glass particles. It also relates to a composite or dental material comprising the above particulate glass filler.
    Type: Application
    Filed: May 13, 2014
    Publication date: March 24, 2016
    Inventors: Wenling Yang, Hengchang Xu, Andreas Utterodt