Patents by Inventor Ronald C. Shawl

Ronald C. Shawl 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 for recovering hazardous waste material
    Patent number: 5139204
    Abstract: An apparatus and process for removing waste material from a container and for separating the waste material into a pumpable slurry fraction and a solids fraction, the apparatus comprising a mechanical means for removing waste material from the container, and a waste pulper for receiving the waste material and for grinding and separating the waste material into at least a pumpable slurry fraction and a solids fraction.
    Type: Grant
    Filed: October 11, 1990
    Date of Patent: August 18, 1992
    Assignee: Chemical Waste Management, Inc.
    Inventors: Ronald C. Shawl, Francis W. Holm, Albert G. Plys
  • Waste treatment apparatus
    Patent number: 4735368
    Abstract: An apparatus for treating waste material contained in drums comprises a conveyor for moving said drums to a purging chamber having an inlet door and outlet door, a conveyer in said purging chamber for moving said drums through said outlet door, a conveyer outside said purging chamber for moving said drums to a shear station where the bottom lids of the drums are sheared off, a compactor chamber for receiving and compacting said drums and extruding said waste materials therein, and a sorter for sorting the waste materials into liquid and solid components and conveying said sorted liquids and solids to respective storage facilities.
    Type: Grant
    Filed: December 2, 1986
    Date of Patent: April 5, 1988
    Assignee: Chemical Waste Management, Inc.
    Inventors: Richard M. Janko, Robert J. Zelinski, Ronald C. Shawl