Patents by Inventor David E. Wakeford

David E. Wakeford 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).

  • Polyester composition
    Patent number: 4189422
    Abstract: Thermoplastic polyester composition containing 2-70% by weight of inorganic fillers and calcium oxide or strontium oxide for improving the melt viscosity stability of the polyester composition under melt conditions.
    Type: Grant
    Filed: July 14, 1975
    Date of Patent: February 19, 1980
    Assignee: Imperial Chemical Industries Limited
    Inventor: David E. Wakeford