Patents by Inventor Ruiyi Dai

Ruiyi Dai 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).

  • Internal-combustion engine
    Patent number: D612402
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: March 23, 2010
    Assignee: Loncin Industry Co., Ltd.
    Inventors: Ruiyi Dai, Chunlin Chen, Ju Lei
  • Internal-combustion engine
    Patent number: D628597
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: December 7, 2010
    Assignee: Loncin Industry Co., Ltd.
    Inventors: Ruiyi Dai, Bing Liu, Ju Lei
  • Internal-combustion engine
    Patent number: D629421
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: December 21, 2010
    Assignee: Loncin Industry Co., Ltd.
    Inventor: Ruiyi Dai