Patents by Inventor Jeffrey J. Sun

Jeffrey J. Sun 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).

  • Modified resins for solid-phase extraction
    Patent number: 5230806
    Abstract: A process of treating aqueous solutions to remove organic solute contaminants by contacting an aqueous solution containing polar organic solute contaminants with a functionalized polystyrene-divinyl benzene adsorbent resin, with the functionalization of said resin being accomplished by organic hydrophilic groups such as hydroxymethyl, acetyl and cyanomethyl.
    Type: Grant
    Filed: December 5, 1991
    Date of Patent: July 27, 1993
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: James S. Fritz, Jeffrey J. Sun
  • Modified resins for solid-phase extraction
    Patent number: 5071565
    Abstract: A process of treating aqueous solutions to remove organic solute contaminants by contacting an aqueous solution containing polar organic solute contaminants with a functionalized polystyrene-divinyl benzene adsorbent resin, with the functionalization of said resin being accomplished by organic hydrophilic groups such as hydroxymethyl, acetyl and cyanomethyl.
    Type: Grant
    Filed: February 4, 1991
    Date of Patent: December 10, 1991
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: James S. Fritz, Jeffrey J. Sun