Patents by Inventor Helen Lin Tang

Helen Lin Tang 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).

  • Soap pump
    Patent number: D582187
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: December 9, 2008
    Assignee: simplehuman, LLC
    Inventors: Frank Yang, Tzu-Hao Wei, Myk Wayne Lum, Helen Lin Tang
  • Soap pump
    Patent number: D608578
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: January 26, 2010
    Assignee: simplehuman, LLC
    Inventors: Frank Yang, Tzu-Hao Wei, Myk Wayne Lum, Helen Lin Tang