Patents by Inventor Pao-Ying Liu

Pao-Ying Liu 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).

  • Pencil box with a copy holder structure
    Patent number: 5690216
    Abstract: A pencil box including a box body, a box cover hinged to the box body, two stands pivoted to the box cover at the back and adapted for supporting the box cover in a tilted open position, a bottom rack and a top rack respectively pivoted to the front side of the box cover and adapted for holding a reading object for example a book for reading, and two support arms bilaterally pivoted to the front side of the box cover and adapted for holding the book in the desired open status.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: November 25, 1997
    Inventor: Pao-Ying Liu