Patents by Inventor Yanchuan Zheng

Yanchuan Zheng 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: 20130115365
    Abstract: The present invention relates to a method for changing translucency of zirconia dental materials through applying an yttrium or ytterbium salt solution onto a pre-sintered zirconia material by dipping or brush-coating. Accordingly, the need of young patient in relation to the translucent requirement for incisal portion of anterior teeth is met in which the translucent level from the crown neck to the incisal portion is gradually changed in a natural manner, similar to natural teeth. A color gradient effect of the crown is produced through dipping in or brush-coating with yttrium or ytterbium salt solution. Moreover, the present invention involves simple operating steps and low cost while providing high consistency in quality.
    Type: Application
    Filed: November 21, 2011
    Publication date: May 9, 2013
    Applicant: LIAONING UPCERA CO. LTD.
    Inventors: Hongjuan Wang, Qingyun Yan, Lingling He, Yanchuan Zheng