WO9629752-A1  SOLID STATE IONICS, vol. 46, no. 1 02, 01051991, pages 169-173, XP000243507 KJAER J: "SOLID STATE ELECTROLYTE MEMBRANES FOR DIRECT METHANOL FUEL CELLS";  CHEMICAL ABSTRACTS, vol. 118, no. 2, 11011993 Columbus, Ohio, US; abstract no. 9408, SUZUKI NABUKAZU ET AL: "Solid-electrolyte fuel cells" XP002010754 & JP,A,04 218 267 (TOSHIBA CORP) 07081992;  CHEMICAL ABSTRACTS, vol. 90, no. 14, 02041979 Columbus, Ohio, US; abstract no. 105217, MURAYAMA NAOHIRO ET AL: "Ion exchanger" XP002010753 & JP,A,53 123 390 (TOKUYAMA SODA CO) 27101978;  DATABASE WPI Section Ch, Week 8316 Derwent Publications Ltd., London, GB; Class A85, AN 83-38131K XP002010755 & JP,A,58 042 626 (ASAHI GLASS KK), 12031983;  PATENT ABSTRACTS OF JAPAN vol. 011, no. 004 (E-468), 07011987 & JP,A,61 181078 (HITACHI LTD), 13081986;  CHEMICAL ABSTRACTS, vol. 118, no. 2, 11 January 1993 Columbus, Ohio, US; abstract no. 9408, SUZUKI NABUKAZU ET AL: "Solid-electrolyte fuel cells" XP002010754 & JP,A,04 218 267 (TOSHIBA CORP) 7 August 1992;  CHEMICAL ABSTRACTS, vol. 90, no. 14, 2 April 1979 Columbus, Ohio, US; abstract no. 105217, MURAYAMA NAOHIRO ET AL: "Ion exchanger" XP002010753 & JP,A,53 123 390 (TOKUYAMA SODA CO) 27 October 1978;  DATABASE WPI Section Ch, Week 8316 Derwent Publications Ltd., London, GB; Class A85, AN 83-38131K XP002010755 & JP,A,58 042 626 (ASAHI GLASS KK) , 12 March 1983;  PATENT ABSTRACTS OF JAPAN vol. 011, no. 004 (E-468), 7 January 1987 & JP,A,61 181078 (HITACHI LTD), 13 August 1986,;  SOLID STATE IONICS, vol. 46, no. 1 02, 1 May 1991, pages 169-173, XP000243507 KJAER J: "SOLID STATE ELECTROLYTE MEMBRANES FOR DIRECT METHANOL FUEL CELLS";  CHEMICAL ABSTRACTS, vol. 90, no. 14, 2 April 1979 Columbus, Ohio, US; abstract no. 105217, MURAYAMA NAOHIRO ET AL: "Ion exchanger" XP002010753&JP,A,53 123 390 (TOKUYAMA SODA CO) 27 October 1978;  DATABASE WPI Section Ch, Week 8316 Derwent Publications Ltd., London, GB; Class A85, AN 83-38131K XP002010755&JP,A,58 042 626 (ASAHI GLASS KK) , 12 March 1983;  CHEMICAL ABSTRACTS, vol. 118, no. 2, 11 January 1993 Columbus, Ohio, US; abstract no. 9408, SUZUKI NABUKAZU ET AL: "Solid-electrolyte fuel cells" XP002010754&JP,A,04 218 267 (TOSHIBA CORP) 7 August 1992;  PATENT ABSTRACTS OF JAPAN vol. 011, no. 004 (E-468), 7 January 1987&JP,A,61 181078 (HITACHI LTD), 13 August 1986,;  SOLID STATE IONICS, vol. 46, no. 1 / 02, 1 May 1991, pages 169-173, XP000243507 KJAER J: "SOLID STATE ELECTROLYTE MEMBRANES FOR DIRECT METHANOL FUEL CELLS"EP815606-A1  See references of WO 9629752AUS5919583-A  An Introduction to Zeolite Molecular Sieves, Alan Dyer, John Wiley & Sons, Chichester, New York, 1988, Chapter 1, No available month.;  Kjaer et al., Solid State Electrolyte Membranes for Direct Methanol Fuel Cells, Solid State Ionics, 46, No. 12, 169-173, May 1, 1991.EP815606-B1  CHEMICAL ABSTRACTS, vol. 118, no. 2, 11 January 1993 Columbus, Ohio, US; abstract no. 9408, SUZUKI NABUKAZU ET AL: "Solid-electrolyte fuel cells" XP002010754 & JP,A,04 218 267 (TOSHIBA CORP) 7 August 1992;  CHEMICAL ABSTRACTS, vol. 90, no. 14, 2 April 1979 Columbus, Ohio, US; abstract no. 105217, MURAYAMA NAOHIRO ET AL: "Ion exchanger" XP002010753 & JP,A,53 123 390 (TOKUYAMA SODA CO) 27 October 1978;  DATABASE WPI Section Ch, Week 8316 Derwent Publications Ltd., London, GB; Class A85, AN 83-38131K XP002010755 & JP,A,58 042 626 (ASAHI GLASS KK) , 12 March 1983;  PATENT ABSTRACTS OF JAPAN vol. 011, no. 004 (E-468), 7 January 1987 & JP,A,61 181078 (HITACHI LTD), 13 August 1986,;  SOLID STATE IONICS, vol. 46, no. 1 02, 1 May 1991, pages 169-173, XP000243507 KJAER J: "SOLID STATE ELECTROLYTE MEMBRANES FOR DIRECT METHANOL FUEL CELLS"