Patents by Inventor Helen L. Tang

Helen L. 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).

  • Hamper
    Patent number: D584019
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: December 30, 2008
    Assignee: Simplehuman LLC
    Inventors: Frank Yang, Tzu-Hao Wei, Myk Wayne Lum, Helen L. Tang
  • Recycle bin
    Patent number: D586972
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: February 17, 2009
    Assignee: Simplehuman LLC
    Inventors: Frank Yang, Tzu-Hao Wei, Myk Wayne Lum, Helen L. Tang
  • Tooth brush holder
    Patent number: D625942
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: October 26, 2010
    Assignee: simplehuman, LLC
    Inventors: Frank Yang, Tzu-Hao Wei, Helen L. Tang, Myk Lum
  • Soap pump
    Patent number: D625944
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: October 26, 2010
    Assignee: simplehuman, LLC
    Inventors: Frank Yang, Tzu-Hao Wei, Helen L. Tang, Myk Lum
  • Bath tumbler
    Patent number: D625955
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: October 26, 2010
    Assignee: simplehuman, LLC
    Inventors: Frank Yang, Tzu-Hao Wei, Helen L. Tang
  • Soap dish
    Patent number: D636200
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: April 19, 2011
    Assignee: simplehuman, LLC
    Inventors: Frank Yang, Tzu-Hao Wei, Helen L. Tang, Myk Lum