WO9807164-A1  DATABASE WPI Section Ch, Week 9727 Derwent Publications Ltd., London, GB; Class A25, AN 97-292211 XP002046699 & JP 09 087 510 A (NIPPON GOSEI GOMU KK) , 31.Maerz 1997;  DATABASE INSPEC INSTITUTE OF ELECTRICAL ENGINEERS, STEVENAGE, GB Inspec No. 5704382, WANG J -T ET AL: "A H/sub 2//O/sub 2/ fuel cell using acid doped polybenzimidazole as polymer electrolyte" XP002046698 & PROCEEDINGS FO THE FIRST INTERNATIONAL SYMPOSIUM ON PROTON CONDUCTING MEMBRANE FUEL CELLS 1, PROCEEDING OF THE FIRST INTERNATIONAL SYMPOSIUM ON PROTON CONDUCTING MEMBRANE FUEL CELLS 1, CHICAGO, IL, USA, 8 OCT. 1995, 1995, PENNINGTON, NJ, USA, ELECTROCHEM. SOC, USA, Seiten 202-213,;  DATABASE INSPEC INSTITUTE OF ELECTRICAL ENGINEERS, STEVENAGE, GB Inspec No. 5478642, WAINRIGHT J S ET AL: "Direct methanol fuel cells using acid doped polybenzimidazole as a polymer electrolyte" XP002046696 & IECEC 96. PROCEEDINGS OF THE 31ST INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE (CAT. NO.96CH35978), IECEC 96. PROCEEDINGS OF THE 31ST INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE, WASHINGTON, DC, USA, 11-16 AUG. 1996, ISBN 0-7803-3547-3, 1996, NEW YORK, NY, USA, IEEE, USA, Seiten 1107-1111 vol.2,;  DATABASE INSPEC INSTITUTE OF ELECTRICAL ENGINEERS, STEVENAGE, GB Inspec No. 5271460, SAMMS S R ET AL: "Thermal stability of proton conducting acid doped polybenzimidazole in simulated fuel cell environments" XP002046697 & JOURNAL OF THE ELECTROCHEMICAL SOCIETY, APRIL 1996, ELECTROCHEM. SOC, USA, Bd. 143, Nr. 4, ISSN 0013-4651, Seiten 1225-1232,;  DATABASE INSPEC INSTITUTE OF ELECTRICAL ENGINEERS, STEVENAGE, GB Inspec No. 5478642, WAINRIGHT J S ET AL: "Direct methanol fuel cells using acid doped polybenzimidazole as a polymer electrolyte" XP002046696&IECEC 96. PROCEEDINGS OF THE 31ST INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE (CAT. NO.96CH35978), IECEC 96. PROCEEDINGS OF THE 31ST INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE, WASHINGTON, DC, USA, 11-16 AUG. 1996, ISBN 0-7803-3547-3, 1996, NEW YORK, NY, USA, IEEE, USA, Seiten 1107-1111 vol.2,;  DATABASE WPI Section Ch, Week 9727 Derwent Publications Ltd., London, GB; Class A25, AN 97-292211 XP002046699&JP 09 087 510 A (NIPPON GOSEI GOMU KK) , 31.Maerz 1997;  DATABASE INSPEC INSTITUTE OF ELECTRICAL ENGINEERS, STEVENAGE, GB Inspec No. 5271460, SAMMS S R ET AL: "Thermal stability of proton conducting acid doped polybenzimidazole in simulated fuel cell environments" XP002046697&JOURNAL OF THE ELECTROCHEMICAL SOCIETY, APRIL 1996, ELECTROCHEM. SOC, USA, Bd. 143, Nr. 4, ISSN 0013-4651, Seiten 1225-1232,;  DATABASE INSPEC INSTITUTE OF ELECTRICAL ENGINEERS, STEVENAGE, GB Inspec No. 5704382, WANG J -T ET AL: "A H/sub 2//O/sub 2/ fuel cell using acid doped polybenzimidazole as polymer electrolyte" XP002046698&PROCEEDINGS FO THE FIRST INTERNATIONAL SYMPOSIUM ON PROTON CONDUCTING MEMBRANE FUEL CELLS 1, PROCEEDING OF THE FIRST INTERNATIONAL SYMPOSIUM ON PROTON CONDUCTING MEMBRANE FUEL CELLS 1, CHICAGO, IL, USA, 8 OCT. 1995, 1995, PENNINGTON, NJ, USA, ELECTROCHEM. SOC, USA, Seiten 202-213,US6264857-B1  Abstract No. 5271460.;  Abstract No. 5478642.;  Abstract No. 5704382.;  Abstract No. 97-292211.