Patents by Inventor Tom C. Yu

Tom C. Yu 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).

  • Thermal stabilization of acetal polymers
    Patent number: 4731397
    Abstract: Stabilized acetal polymer molding compositions are formed by first preparing an intimate dispersion of cyanoguanidine or melamine in a carrier resin, e.g. a non-ionic carrier resin such as an ethylene/ethyl acrylate copolymer, and compounding the dispersion with the acetal polymer. The resulting composition is found in many cases to have improved thermal stability over compositions prepared by adding the cyanoguanidine or melamine as pure crystals.
    Type: Grant
    Filed: September 20, 1985
    Date of Patent: March 15, 1988
    Assignee: Celanese Corporation
    Inventors: Andrew B. Auerbach, Tom C. Yu