Patents by Inventor Dennis Hwei-Feng Cheng

Dennis Hwei-Feng Cheng 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).

  • Liquid dispenser
    Patent number: D717069
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: November 11, 2014
    Assignee: Umbra LLC
    Inventor: Dennis Hwei-Feng Cheng
  • Liquid dispenser
    Patent number: D718640
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: December 2, 2014
    Assignee: Umbra LLC
    Inventor: Dennis Hwei-Feng Cheng
  • Liquid soap dispenser
    Patent number: D979283
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: February 28, 2023
    Assignee: Umbra LLC
    Inventor: Dennis Hwei-Feng Cheng