US2002110714-A1 -- US2239595-A   ;  US3659604-A   ;  US3801077-A   PERASON G (PEAR-Individual);  US4276244-A   RICHTER GEDEON VEGYESZETI GYAR (RICT);  US4769297-A   INT FUEL CELLS CORP (ITFU)   REISER C A,  SAWYER R D;  US4826742-A   INT FUEL CELLS CORP (ITFU)   REISER C A;  US4911866-A   DISNEY CO WALT (DISY)   MONROE M M;  US5009967-A   INT FUEL CELLS CORP (ITFU);  UNITED TECHNOLOGIES CORP (UNAC)   SCHEFFLER G W;  US5139344-A   MUTTER A (MUTT-Individual)   MUTTER A;  US5242764-A   BCS TECHNOLOGY INC (BCST-Non-standard)   DHAR H P;  US5262250-A   TANAKA KIKINZOKU KOGYO KK (TANI);  WATANABE M (WATA-Individual)   WATANABE M;  US5318863-A   BCS TECHNOLOGY INC (BCST-Non-standard)   DHAR H P;  US5330626-A   DU PONT DE NEMOURS & CO E I (DUPO)   BANERJEE S;  US5368786-A   WISCONSIN ALUMNI RES FOUND (WISC)   MACAULAY P D,  VIGNALI J C,  DINAUER W R,  OTIS D R,  EL-WAKIL M M;  US5382478-A   BALLARD POWER SYSTEMS INC (BLRD)   WOZNICZKA B M,  CHOW C Y;  US5403675-A   MAXDEM INC (MAXD-Non-standard)   OGATO N,  RIKUKAWA M;  US5432020-A   DAIMLER-BENZ AG (DAIM)   FLECK W;  US5434016-A   DAIMLER-BENZ AG (DAIM)   FLECK W;  US5512831-A   LYNNTECH INC (LYNN-Non-standard)   MURPHY O J,  CISAR A J;  US5547551-A   GORE & ASSOC INC W L (GORE)   ZUCKERBROD D,  HOBSON A R,  BAHAR B,  KOLDE J A;  US5635039-A   LYNNTECH INC (LYNN-Non-standard)   HITCHENS G D,  MURPHY O J,  CISAR A J,  GONZALEZ-MARTIN A;  US5679482-A   DAIS CORP (DAIS-Non-standard)   RIDER J N,  WNEK G E,  EHRENBERG S G,  SERPICO J M;  US5786104-A   DOW CHEM CO (DOWC)   PLOWMAN K R,  BLACK L L;  US5952119-A   UNIV CALIFORNIA (REGC)   WILSON M S;  US5965288-A   HONDA GIKEN KOGYO KK (HOND)   OKAMOTO T;  US20020015867-A1   ;  US6294277-B1   EQUOS RES KK (EQUS)   MASATAKA U,  KENJI K,  MUNEHISA H,  NORIYUKI T;  US6350535-B1   PLUG POWER INC (PLUG-Non-standard)   KRALICK J H;  US6350536-B1   TOYODA JIDOSHOKKI SEISAKUSHO KK (TOYX)   BAN T,  FUJII T,  KATOH H,  KAWAGUCHI R;  US6383671-B1   ;  US6576357-B1   SIEMENS AG (SIEI)   HELMOLT R V;  US6689500-B2   NELSON M H (NELS-Individual)   NELSON M H;  WO2003043115-A2 -- DE19821766-C1   SIEMENS AG (SIEI)   HELMOLT R V;  EP629013-B1   DAIMLER-BENZ AG (DAIM)   FLECK W;  JP05036428-A   ;  JP07263010-A   ;  US4911866-A   DISNEY CO WALT (DISY)   MONROE M M;  US6350535-B1   PLUG POWER INC (PLUG-Non-standard)   KRALICK J H;  US6383671-B1   ;  US6821660-B2 -- US5382478-A   BALLARD POWER SYSTEMS INC (BLRD)   WOZNICZKA B M,  CHOW C Y;  US6294277-B1   EQUOS RES KK (EQUS)   MASATAKA U,  KENJI K,  MUNEHISA H,  NORIYUKI T;  US6350536-B1   TOYODA JIDOSHOKKI SEISAKUSHO KK (TOYX)   BAN T,  FUJII T,  KATOH H,  KAWAGUCHI R;  US6689500-B2   NELSON M H (NELS-Individual)   NELSON M H;  DE629013-C   ;  DE19821766-C1   SIEMENS AG (SIEI)   HELMOLT R V;  JP05036428-A   ;  JP07263010-A   ;  US2239595-A   ;  US3659604-A   ;  US3801077-A   PERASON G (PEAR-Individual);  US4276244-A   RICHTER GEDEON VEGYESZETI GYAR (RICT);  US4769297-A   INT FUEL CELLS CORP (ITFU)   REISER C A,  SAWYER R D;  US4826742-A   INT FUEL CELLS CORP (ITFU)   REISER C A;  US4911866-A   DISNEY CO WALT (DISY)   MONROE M M;  US5009967-A   INT FUEL CELLS CORP (ITFU);  UNITED TECHNOLOGIES CORP (UNAC)   SCHEFFLER G W;  US5139344-A   MUTTER A (MUTT-Individual)   MUTTER A;  US5242764-A   BCS TECHNOLOGY INC (BCST-Non-standard)   DHAR H P;  US5262250-A   TANAKA KIKINZOKU KOGYO KK (TANI);  WATANABE M (WATA-Individual)   WATANABE M;  US5318863-A   BCS TECHNOLOGY INC (BCST-Non-standard)   DHAR H P;  US5330626-A   DU PONT DE NEMOURS & CO E I (DUPO)   BANERJEE S;  US5368786-A   WISCONSIN ALUMNI RES FOUND (WISC)   MACAULAY P D,  VIGNALI J C,  DINAUER W R,  OTIS D R,  EL-WAKIL M M;  US5403675-A   MAXDEM INC (MAXD-Non-standard)   OGATO N,  RIKUKAWA M;  US5432020-A   DAIMLER-BENZ AG (DAIM)   FLECK W;  US5434016-A   DAIMLER-BENZ AG (DAIM)   FLECK W;  US5512831-A   LYNNTECH INC (LYNN-Non-standard)   MURPHY O J,  CISAR A J;  US5547551-A   GORE & ASSOC INC W L (GORE)   ZUCKERBROD D,  HOBSON A R,  BAHAR B,  KOLDE J A;  US5635039-A   LYNNTECH INC (LYNN-Non-standard)   HITCHENS G D,  MURPHY O J,  CISAR A J,  GONZALEZ-MARTIN A;  US5679482-A   DAIS CORP (DAIS-Non-standard)   RIDER J N,  WNEK G E,  EHRENBERG S G,  SERPICO J M;  US5786104-A   DOW CHEM CO (DOWC)   PLOWMAN K R,  BLACK L L;  US5952119-A   UNIV CALIFORNIA (REGC)   WILSON M S;  US5965288-A   HONDA GIKEN KOGYO KK (HOND)   OKAMOTO T;  US20020015867-A1   ;  US6350535-B1   PLUG POWER INC (PLUG-Non-standard)   KRALICK J H;  US6383671-B1   ;  US6576357-B1   SIEMENS AG (SIEI)   HELMOLT R V