Patents by Inventor Juan-Bao Leu

Juan-Bao Leu 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).

  • Structure of ashtray
    Patent number: 5111833
    Abstract: An having comprising a top ring supported above a base container by three ornamental posts, wherein the base container has a ring-shaped, tapered top edge at the top in outer diameter larger than the top ring for guiding cigarette butt from the top ring into the chamber inside the base container.
    Type: Grant
    Filed: July 23, 1991
    Date of Patent: May 12, 1992
    Inventor: Juan-Bao Leu