US2006046125-A1 -- US3432357-A   ;  US4369236-A   GRACE & CO W R (GRAC)   ORELL D D,  CHOI W M,  LIN N J;  US4430394-A   VARTA BATTERIE AG (VART)   BECHTOLD D;  US4702973-A   INST GAS TECHNOLOGY (IGTE)   MARIANOWSK L G;  US4826554-A   DOW CHEM CO (DOWC)   MCINTYRE J M,  BIRDWELL J D,  SMITH B R;  US4933242-A   ISHIKAWAJIMA HARIMA JUKOGYO KK (ISHI)   KOGA M,  WATANABE T,  HIRATA T,  OGOSHI M;  US4981763-A   MITSUBISHI DENKI KK (MITQ)   MITSUTA K,  MURAHASHI T,  SAKAMOTO Y,  MITSUNAGA T;  US4988583-A   CANADA MIN NAT DEFENCE (MIND);  CANADIAN GOVERNMENT (CNDG)   WATKINS D S,  DIRCKS K W,  EPP D G;  US5108849-A   CANADA MIN NAT DEFENCE (MIND)   WATKINS D S,  DIRCKS K W,  EPP D G;  US5252410-A   BALLARD POWER SYSTEMS INC (BLRD)   WILKINSON D P,  VOSS H H,  PRATER K B;  US5362578-A   INST GAS TECHNOLOGY (IGTE)   MARIANOWSKI L G,  BACHTA R P,  PETRI R J,  MEEK J;  US5679479-A   AMTEK RES INT LLC (AMTE-Non-standard)   YOUNG J,  ALEXANDER F E;  US5683828-A   AEROJET GEN CORP (AERG)   SPEAR R G,  MUEGGENBURG H H,  HODGE R;  US6150049-A   PLUG POWER INC (PLUG-Non-standard)   NELSON M H,  CUSACK M J,  MILLER J R,  CARLSTROM C M;  US6544681-B2   MCLEAN G F (MCLE-Individual);  DJILALI N (DJIL-Individual);  REID C E J (REID-Individual);  LINDSTROM J (LIND-Individual);  DONIS W R M (DONI-Individual)   MCLEAN G F,  DJILALI N,  REID C E J,  LINDSTROM J,  DONIS W R M;  US7687183-B2 -- DE2514034-A   ;  DE3812813-A   ;  JP01292759-A   ;  JP08050903-A   ;  JP09063599-A   ;  JP10154519-A   ;  JP2004047213-A   NISSAN MOTOR CO LTD (NSMO)   AOKI A;  US3432357-A   ;  US4369236-A   GRACE & CO W R (GRAC)   ORELL D D,  CHOI W M,  LIN N J;  US4430394-A   VARTA BATTERIE AG (VART)   BECHTOLD D;  US4702973-A   INST GAS TECHNOLOGY (IGTE)   MARIANOWSK L G;  US4826554-A   DOW CHEM CO (DOWC)   MCINTYRE J M,  BIRDWELL J D,  SMITH B R;  US4933242-A   ISHIKAWAJIMA HARIMA JUKOGYO KK (ISHI)   KOGA M,  WATANABE T,  HIRATA T,  OGOSHI M;  US4981763-A   MITSUBISHI DENKI KK (MITQ)   MITSUTA K,  MURAHASHI T,  SAKAMOTO Y,  MITSUNAGA T;  US4988583-A   CANADA MIN NAT DEFENCE (MIND);  CANADIAN GOVERNMENT (CNDG)   WATKINS D S,  DIRCKS K W,  EPP D G;  US5108849-A   CANADA MIN NAT DEFENCE (MIND)   WATKINS D S,  DIRCKS K W,  EPP D G;  US5252410-A   BALLARD POWER SYSTEMS INC (BLRD)   WILKINSON D P,  VOSS H H,  PRATER K B;  US5362578-A   INST GAS TECHNOLOGY (IGTE)   MARIANOWSKI L G,  BACHTA R P,  PETRI R J,  MEEK J;  US5679479-A   AMTEK RES INT LLC (AMTE-Non-standard)   YOUNG J,  ALEXANDER F E;  US5683828-A   AEROJET GEN CORP (AERG)   SPEAR R G,  MUEGGENBURG H H,  HODGE R;  US6150049-A   PLUG POWER INC (PLUG-Non-standard)   NELSON M H,  CUSACK M J,  MILLER J R,  CARLSTROM C M;  US6544681-B2   MCLEAN G F (MCLE-Individual);  DJILALI N (DJIL-Individual);  REID C E J (REID-Individual);  LINDSTROM J (LIND-Individual);  DONIS W R M (DONI-Individual)   MCLEAN G F,  DJILALI N,  REID C E J,  LINDSTROM J,  DONIS W R M;  WO2000002269-A2