Patents by Inventor Yongjin Zheng

Yongjin 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).

  • Lock
    Patent number: D637888
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: May 17, 2011
    Inventor: Yongjin Zheng
  • Smart padlock
    Patent number: D834918
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: December 4, 2018
    Assignee: ZHEJIANG PUJIANG PLUM-BLOSSOM LOCK INDUSTRY
    Inventor: Yongjin Zheng
  • Fingerprint padlock
    Patent number: D902690
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: November 24, 2020
    Assignee: ZHEJIANG PUJIANG PLUM-BLOSSOM LOCK INDUSTRY (GROUP) CO., LTD.
    Inventor: Yongjin Zheng
  • Padlock
    Patent number: D937069
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: November 30, 2021
    Assignee: ZHEJIANG PUJIANG PLUM-BLOSSOM LOCK INDUSTRY (GROUP) CO., LTD.
    Inventor: Yongjin Zheng