Patents by Inventor Randy Self

Randy Self 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).

  • Methods for removing selenium from a waste stream
    Patent number: 6251283
    Abstract: The present invention is directed to a method for removing selenium from a waste stream. The process is a multi-step process that removes selenium from a waste stream in the form of barium selenate and/or barium selenite. In a further step, the barium selenate and/or barium selenite forms a complex precipitate with barium sulfate, which encapsulates the barium selenate and/or barium selenite. The complex precipitate is subsequently removed from the waste stream.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: June 26, 2001
    Assignee: Perma-Fix Environmental Services, Inc.
    Inventors: Louis Centofanti, Randy Self, Tommy W. Yarbrough