Patents by Inventor Chaohua Wang

Chaohua Wang 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).

  • Blends of biodegradable poly(hydroxy ester ether) thermoplastic with renewable proteins
    Patent number: 6310136
    Abstract: Compositions of the invention are produced by blending hydroxy-functional polyesters with proteins at elevated temperatures. These compositions can be shaped into articles by known processes such as extrusion, compression molding, and injection molding. Among articles that can be made from such compositions are those with sufficiently strong tensile strengths as to form disposable utensils. However, the compositions are more environmentally friendly than commodity plastics such as polyethylene or polystyrene.
    Type: Grant
    Filed: July 28, 2000
    Date of Patent: October 30, 2001
    Assignees: The United States of America as represented by the Secretary of Agriculture, The Biotechnology Research & Development Corp.
    Inventors: Chaohua Wang, Craig J. Carriere