Patents by Inventor Clarence Wright

Clarence Wright 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).

  • Method of mixing composite filled thermoplastic resins
    Patent number: 4980390
    Abstract: A method of mixing filled thermoplastic resins containing particles of resin and filler. The method comprises preheating to about 150 degrees to 250 degrees F., at least the resin particles, and thereafter mixing until plasticized. The filler may also be preheated between 150 degrees and 350 degrees F. This method reduces the mixing time and improves the characteristics of the product.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: December 25, 1990
    Assignee: Ralph B. Andy
    Inventors: Norman Shorr, Clarence Wright