Patents by Inventor Y. Y. Hsu

Y. Y. 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).

  • Bioerodible polymeric semi-interpenetrating network alloys and internal fixation devices made therefrom
    Patent number: 6153664
    Abstract: A bioerodible cement system, which, upon mixing of the system parts, forms a cured bioerodible cement, said system comprising a first part comprising a first bioerodible polymer capable of producing acidic products upon hydrolytic degradation; and a second part comprising a second bioerodible scaffolding polymer which upon crosslinking provides a biopolymeric scaffolding or internal reinforcement for said cured cement is disclosed. In a preferred embodiment, the second bioerodible polymer comprises polypropylene fumarate (PPF), which is cross-linked during curing, desirably by a vinyl monomer such as vinyl pyrrolidone (VP) to form the biopolymeric scaffolding which provides the cured cement with dimensional and geometric stability.
    Type: Grant
    Filed: October 7, 1998
    Date of Patent: November 28, 2000
    Assignee: Cambridge Scientific, Inc.
    Inventors: Donald L. Wise, Joseph D. Gresser, Debra J. Trantolo, Y. Y. Hsu