Patents by Inventor Earl L. Maltbie

Earl L. Maltbie 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).

  • Portable batch blending system
    Patent number: 5634716
    Abstract: A portable PVC resin blending system mounted in a semi-monocoque steel silo having multiple levels therein. The various components of the blending system are mounted within and attached to the silo and lifting lugs on the silo capable of lifting and tilting the silo from a vertical to a horizontal position for transportation and re-erection.
    Type: Grant
    Filed: October 30, 1995
    Date of Patent: June 3, 1997
    Assignee: Coronado Engineering, Inc.
    Inventors: Thomas L. Westall, Thomas Nowak, David R. Griffith, Earl L. Maltbie, Curtis L. Crandall