Patents by Inventor Yi-Ren Zeng

Yi-Ren Zeng 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).

  • Spectacles
    Patent number: D397710
    Type: Grant
    Filed: September 23, 1997
    Date of Patent: September 1, 1998
    Inventor: Yi-Ren Zeng
  • Spectacles
    Patent number: D397711
    Type: Grant
    Filed: September 23, 1997
    Date of Patent: September 1, 1998
    Inventor: Yi-Ren Zeng