Patents by Inventor R. D. Ellender

R. D. Ellender 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).

  • Process for color removal from paper mill wastewaters
    Patent number: 5529697
    Abstract: Potassium permanganate is added to paper mill wastewater streams at an elevated temperature to remove color compounds from the effluent streams. The potassium permanganate causes the formation of flocculant particles which are precipitated out of the stream. This precipitate is then treated with acid to cause resolubilization.
    Type: Grant
    Filed: July 20, 1994
    Date of Patent: June 25, 1996
    Assignee: The University of Southern Mississippi
    Inventors: Dwaine A. Braasch, R. D. Ellender