Patents by Inventor Lianjun SHENG

Lianjun SHENG 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).

  • Multilayer-color composite material for use in dental department, and preparation method therefor
    Patent number: 10485736
    Abstract: A method for preparing a multilayer-color composite material for use in dental department comprises: preparing multiple types of monochromatic composite material precursor powder different in color, carrying out dry-pressing and preforming on the precursor powder, so as to obtain a preformed green body; and then carrying out pressurization and heating processing on the preformed green body, so as to obtain a multilayer-color composite material that gradually changes in color from neck portions to incisal ends of teeth, so that the multilayer-color composite material has a higher similarity to the material of natural teeth.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: November 26, 2019
    Assignee: Shenzhen Upcera Dental Technology Co., Ltd
    Inventors: Hongjuan Wang, Yuexiu Qiu, Lianjun Sheng, Feng Shi
  • MULTILAYER-COLOR COMPOSITE MATERIAL FOR USE IN DENTAL DEPARTMENT, AND PREPARATION METHOD THEREFOR
    Publication number: 20180161251
    Abstract: A method for preparing a multilayer-color composite material for use in dental department comprises: preparing multiple types of monochromatic composite material precursor powder different in color, carrying out dry-pressing and preforming on the precursor powder, so as to obtain a preformed green body; and then carrying out pressurization and heating processing on the preformed green body, so as to obtain a multilayer-color composite material that gradually changes in color from neck portions to incisal ends of teeth, so that the multilayer-color composite material has a higher similarity to the material of natural teeth.
    Type: Application
    Filed: December 31, 2015
    Publication date: June 14, 2018
    Inventors: Hongjuan WANG, Yuexiu QIU, Lianjun SHENG, Feng SHI