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    • Method of making magnetic, crosslinked chitosan support materials and products thereof 

      Virginia Tech Intellectual Properties, Inc.; Glasser, Wolfgang G.; Jain, Rajesh K. (United States Patent and Trademark Office, 1999-01-26)
      Method for magnetizing crosslinked chitosan support material involving the treatment of carboxyl group-containing, crosslinked chitosan gels with solutions of ferrous chloride followed by treatment with dilute aqueous ...