Patents by Inventor Leslie D. Nelson

Leslie D. Nelson 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).

  • Chlorine-resistant composite membranes with high organic rejection
    Patent number: 5582725
    Abstract: A method for making a chlorine-resistant composite polyamide membrane having high organic rejection, the essential step of which comprises treating a conventional composite membrane with an acyl halide. The novel membrane is especially suitable for the treatment of water containing chlorine or lower molecular weight organic compounds.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: December 10, 1996
    Assignee: Bend Research, Inc.
    Inventors: Scott B. McCray, Dwayne T. Friesen, Robert P. Barss, Leslie D. Nelson