WO2006008319-A2  LENKA S. ET AL.: "SYNTHETIC RESINS: XV. CHELATION ION EXCHANGE PROPERTIES OF 2,4-DINITROPHENYLHYDRAZONE OF RESACETOPHENONE-FORMALDEHYDE RESIN" POLYMER INTERNATIONAL, vol. 29, no. 2, 1992, pages 103-106, XP008031102;  RATH D.K. ET AL.: "SYNTHETIC RESINS: XIV. CHELATION ION EXCHANGE PROPERTIES OF 2,4-DINITRO PHENYLHYDRAZONE OF 2-HYDROXY ACETOPHENONE-FORMALDEHYDE RESIN" JOURNAL OF APPLIED POLYMER SCIENCE, vol. 51, no. 9, 28 February 1994 (1994-02-28), pages 1679-1682, XP000464433 ISSN: 0021-8995;  OKADA T. ET AL.: "A COMPARATIVE STUDY OF ORGANIC COBALT COMPLEX CATALYSTS FOR OXYGEN REDUCTION IN POLYMER ELECTROLYTE FUEL CELLS" JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS, vol. 9, no. 4, December 1999 (1999-12), pages 199-219, XP002384120 cited in the applicationWO2006008319-A3  OKADA T. ET AL.: "A COMPARATIVE STUDY OF ORGANIC COBALT COMPLEX CATALYSTS FOR OXYGEN REDUCTION IN POLYMER ELECTROLYTE FUEL CELLS" JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS, vol. 9, no. 4, December 1999 (1999-12), pages 199-219, XP002384120 cited in the application;  RATH D.K. ET AL.: "SYNTHETIC RESINS: XIV. CHELATION ION EXCHANGE PROPERTIES OF 2,4-DINITRO PHENYLHYDRAZONE OF 2-HYDROXY ACETOPHENONE-FORMALDEHYDE RESIN" JOURNAL OF APPLIED POLYMER SCIENCE, vol. 51, no. 9, 28 February 1994 (1994-02-28), pages 1679-1682, XP000464433 ISSN: 0021-8995;  LENKA S. ET AL.: "SYNTHETIC RESINS: XV. CHELATION ION EXCHANGE PROPERTIES OF 2,4-DINITROPHENYLHYDRAZONE OF RESACETOPHENONE-FORMALDEHYDE RESIN" POLYMER INTERNATIONAL, vol. 29, no. 2, 1992, pages 103-106, XP008031102;  OKADA T. ET AL.: "A COMPARATIVE STUDY OF ORGANIC COBALT COMPLEX CATALYSTS FOR OXYGEN REDUCTION IN POLYMER ELECTROLYTE FUEL CELLS", JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS, vol. 9, no. 4, December 1999 (1999-12-01), pages 199 - 219, XP002384120;  RATH D.K. ET AL.: "SYNTHETIC RESINS: XIV. CHELATION ION EXCHANGE PROPERTIES OF 2,4-DINITRO PHENYLHYDRAZONE OF 2-HYDROXY ACETOPHENONE-FORMALDEHYDE RESIN", JOURNAL OF APPLIED POLYMER SCIENCE, vol. 51, no. 9, 28 February 1994 (1994-02-28), pages 1679 - 1682, XP000464433, ISSN: 0021-8995;  LENKA S. ET AL.: "SYNTHETIC RESINS: XV. CHELATION ION EXCHANGE PROPERTIES OF 2,4-DINITROPHENYLHYDRAZONE OF RESACETOPHENONE-FORMALDEHYDE RESIN", POLYMER INTERNATIONAL, vol. 29, no. 2, 1992, pages 103 - 106, XP008031102;  OKADA T. ET AL.: "A COMPARATIVE STUDY OF ORGANIC COBALT COMPLEX CATALYSTS FOR OXYGEN REDUCTION IN POLYMER ELECTROLYTE FUEL CELLS", JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS, vol. 9, no. 4, December 1999 (1999-12-01), pages 199 - 219, XP002384120,relevantClaims[1-34],relevantPassages[&lt;pp&gt;W&lt;/pp&gt;];  RATH D.K. ET AL.: "SYNTHETIC RESINS: XIV. CHELATION ION EXCHANGE PROPERTIES OF 2,4-DINITRO PHENYLHYDRAZONE OF 2-HYDROXY ACETOPHENONE-FORMALDEHYDE RESIN", JOURNAL OF APPLIED POLYMER SCIENCE, vol. 51, no. 9, 28 February 1994 (1994-02-28), pages 1679 - 1682, XP000464433, ISSN: 0021-8995,relevantClaims[1-34],relevantPassages[&lt;pp&gt;W&lt;/pp&gt;];  LENKA S. ET AL.: "SYNTHETIC RESINS: XV. CHELATION ION EXCHANGE PROPERTIES OF 2,4-DINITROPHENYLHYDRAZONE OF RESACETOPHENONE-FORMALDEHYDE RESIN", POLYMER INTERNATIONAL, vol. 29, no. 2, 1992, pages 103 - 106, XP008031102,relevantClaims[1-34],relevantPassages[&lt;pp&gt;W&lt;/pp&gt;]