Patents by Inventor Lian Chang Zhang

Lian Chang Zhang 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).

  • Network conference telephone apparatus
    Patent number: D883248
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: May 5, 2020
    Assignee: YEALINK (XIAMEN) NETWORK TECHNOLOGY CO., LTD.
    Inventors: Jian Cheng Zhang, Wei Cen Xu, Chun Sheng Su, Jing Feng Su, Lian Chang Zhang, Ji Wei Zhou
  • Network conference telephone apparatus
    Patent number: D885360
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: May 26, 2020
    Assignee: YEALINK (XIAMEN) NETWORK TECHNOLOGY CO., LTD.
    Inventors: Jian Cheng Zhang, Wei Cen Xu, Chun Sheng Su, Jing Feng Su, Lian Chang Zhang, Ji Wei Zhou
  • Network conference telephone apparatus
    Patent number: D886075
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: June 2, 2020
    Assignee: YEALINK (XIAMEN) NETWORK TECHNOLOGY CO., LTD.
    Inventors: Jian Cheng Zhang, Wei Cen Xu, Chun Sheng Su, Jing Feng Su, Lian Chang Zhang, Ji Wei Zhou