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August 1987;  INTERNATIONAL JOURNAL OF HYDROGEN ENERGY., Bd.17, Nr.2, Februar 1992, OXFORD GB Seiten 115 - 123 G. G. SCHERER ET AL 'RADIATION GRAFTED MEMBRANES: SOME STRUCTURAL INVESTIGATIONS IN THE RELATION TO THEIR BEHAVIOUR IN ION-EXCHANGE-MEMBRANE WATER ELECTROLYSIS CELLS' in der Anmeldung erwaehnt;  JOURNAL OF APPLIED ELECTROCHEMISTRY., Bd.19, 1989, LONDON GB Seiten 566 - 570 T. ASAWA 'Material properties of cation exchange membranes for chloralkali electrolysis, water electrolysis and fuel cells';  JOURNAL OF APPLIED ELECTROCHEMISTRY., Bd.22, 1992, LONDON GB Seiten 204 - 214 A. G. GUZMAN-GARCIA ET AL 'Analysis of radiation - grafted membranes for fuel cell electrolytes';  PROCEEDINGS OF THE 27TH INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE - VOLUME 3 IECEC -92 SAN DIEGO CA 3-7 AUGUST 1992 Seiten 3.419 - 3.424 F. N. 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August 1987EP667983-A1  See references of WO 9507553A2;  See references of WOA 9507553WO9507553-A3  CHEMICAL ABSTRACTS, vol. 108, no. 6, 08/02/1988, Columbus, Ohio, US; abstract no. 41131k, IWAASA SHUZO ET AL "Fuel cells with ion-exchange membrane electrolyte" & JP62 195 855 (HITACHI LTD) 28/08/1987;  INTERNATIONAL JOURNAL OF HYDROGEN ENERGY., vol.17, no.2, February 1992, OXFORD GB pages 115 - 123 G. G. SCHERER ET AL "RADIATION GRAFTED MEMBRANES: SOME STRUCTURAL INVESTIGATIONS IN THE RELATION TO THEIR BEHAVIOUR IN ION-EXCHANGE-MEMBRANE WATER ELECTROLYSIS CELLS";  JOURNAL OF APPLIED ELECTROCHEMISTRY., vol.19, 1989, LONDON GB pages 566 - 570 T. ASAWA "Material properties of cation exchange membranes for chloralkali electrolysis, water electrolysis and fuel cells";  JOURNAL OF APPLIED ELECTROCHEMISTRY., vol.22, 1992, LONDON GB pages 204 - 214 A. G. GUZMAN-GARCIA ET AL "Analysis of radiation - grafted membranes for fuel cell electrolytes";  PROCEEDINGS OF THE 27TH INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE - VOLUME 3 IECEC -92 SAN DIEGO CA 03/08/1992-07/08/1992 pages 3.419 - 3.424 F. N. BUCHI ET AL "Radiation Grafted and Sulfonated (FEP-g-Polystyrene)";  PROCEEDINGS OF THE 27TH INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE - VOLUME 3 IECEC -92 SAN DIEGO CA 3-7 AUGUST 1992 Seiten 3.419 - 3.424 F. N. B]CHI ET AL 'Radiation Grafted and Sulfonated (FEP-g-Polystyrene)' in der Anmeldung erw{hnt;  JOURNAL OF APPLIED ELECTROCHEMISTRY., Bd.19, 1989, LONDON GB Seiten 566 - 570 T. ASAWA 'Material properties of cation exchange membranes for chloralkali electrolysis, water electrolysis and fuel cells';  INTERNATIONAL JOURNAL OF HYDROGEN ENERGY., Bd.17, Nr.2, Februar 1992, OXFORD GB Seiten 115 - 123 G. G. 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ASAWA: "Material properties of cation exchange membranes for chloralkali electrolysis, water electrolysis and fuel cells", JOURNAL OF APPLIED ELECTROCHEMISTRY., vol. 19, 1989, LONDON GB, pages 566 - 570,relevantClaims[1],relevantPassages[&lt;pp&gt;570&lt;/pp&gt;&lt;column&gt;L&lt;/column&gt;&lt;para&gt;3&lt;/para&gt;|&lt;pp&gt;A&lt;/pp&gt;];  G. G. SCHERER ET AL: "RADIATION GRAFTED MEMBRANES: SOME STRUCTURAL INVESTIGATIONS IN THE RELATION TO THEIR BEHAVIOUR IN ION-EXCHANGE-MEMBRANE WATER ELECTROLYSIS CELLS", INTERNATIONAL JOURNAL OF HYDROGEN ENERGY., vol. 17, no. 2, February 1992 (1992-02-01), OXFORD GB, pages 115 - 123,relevantClaims[1,4,6,13,14],relevantPassages[&lt;pp&gt;115&lt;/pp&gt;&lt;column&gt;R&lt;/column&gt;&lt;line&gt;L&lt;/line&gt;&lt;ppl&gt;116&lt;/ppl&gt;&lt;coll&gt;L&lt;/coll&gt;&lt;linel&gt;2&lt;/linel&gt;|&lt;pp&gt;116&lt;/pp&gt;&lt;column&gt;L&lt;/column&gt;&lt;line&gt;19&lt;/line&gt;&lt;linel&gt;22&lt;/linel&gt;|&lt;pp&gt;116&lt;/pp&gt;&lt;column&gt;R&lt;/column&gt;&lt;para&gt;2&lt;/para&gt;];  CHEMICAL ABSTRACTS, vol. 108, no. 6, 8 February 1988, Columbus, Ohio, US; abstract no. 41131k, IWAASA SHUZO ET AL: "Fuel cells with ion-exchange membrane electrolyte",relevantClaims[1,3,4,6,13],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;];  A. G. 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