Patents by Inventor Tsoo-Hing Leung

Tsoo-Hing Leung 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).

  • Insulated jar with lid
    Patent number: D256651
    Type: Grant
    Filed: October 13, 1978
    Date of Patent: September 2, 1980
    Inventors: Tsoo-Hing Leung, Philip Leung
  • Insulated jar with lid
    Patent number: D256652
    Type: Grant
    Filed: October 13, 1978
    Date of Patent: September 2, 1980
    Inventors: Tsoo-Hing Leung, Philip Leung