Patents by Inventor James R. Riggs

James R. Riggs 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).

  • Apparatus for the separation of solid particulates from a gaseous effluent
    Patent number: 4869880
    Abstract: An apparatus for separating solids and vapors from a suspension of the two materials is disclosed. The solids are directed through a conoid element to enhance directional flow and to prevent return of solids to the separation apparatus.
    Type: Grant
    Filed: June 8, 1984
    Date of Patent: September 26, 1989
    Assignee: Ashland Oil, Inc.
    Inventors: William P. Hettinger, Jr., Steven W. Murray, Ricky L. Adkins, Billy T. Fritz, James R. Riggs, Paul W. Walters
  • Apparatus for the separation of solid particulates from a gaseous effluent
    Patent number: 4792437
    Abstract: An apparatus for separating solids and vapors from a suspension of the two materials is disclosed. The solids are directed through a conoid element to enhance directional flow and to prevent return of solids to the separation apparatus.
    Type: Grant
    Filed: September 4, 1986
    Date of Patent: December 20, 1988
    Assignee: Ashland Oil, Inc.
    Inventors: William P. Hettinger, Jr., Steven W. Murray, Ricky L. Adkins, Billy T. Fritz, James R. Riggs, Paul W. Walters