Patents by Inventor Mary Hsu

Mary Hsu 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).

  • Patent number: 4996784
    Abstract: An integral picture frame with quick changeable flexible decoration part including an annular inner border portion with a inner convex surface, an annular intermediary protrusion portion and an annular outer border portion with an outer convex portion. A number of spaced first ribs formed on an outer surface of the annular inner border portion are attached to a first edge of a first annular flat seat at a lower part of each first rib and thereby defining a first compartment among each two first ribs and the first flat seat. A number of spaced second ribs formed on an inner surface of the annular outer border portion are attached to a first edge of a second annular flat seat at a lower part of each second rib and thereby defining a second compartment among each two second ribs and the second flat seat.
    Type: Grant
    Filed: January 12, 1990
    Date of Patent: March 5, 1991
    Inventor: Mary Hsu