US2003108731-A1 -- US3404061-A   ;  US4115627-A   UNITED TECHNOLOGIES CORP (UNAC)   CHRISTNER L G,  NAGLE D C;  US4165349-A   UNITED TECHNOLOGIES CORP (UNAC)   SANDELLI G J;  US4190257-A   UNION CARBIDE CORP (UNIC)   SCHNITZLER D L;  US4226821-A   NIPPON CARBON CO LTD (NICN)   ISHIAWA T,  KAWAZUMI K,  YAMAZOE H;  US4292379-A   WESTINGHOUSE ELECTRIC CORP (WESE)   KOTHMANN R E;  US4371433-A   GENERAL ELECTRIC CO (GENE);  DE NORA PERMELEC (DNOR-Non-standard)   BALKO E N,  MOULTHROP L C;  US4515871-A   TOKYO SHIBAURA DENKI KK (TOKE)   SHIROGAMI T,  UENO M;  US4533455-A   ORONZIO DE NORA IMPIANTI ELETR (ORON)   BALKO E N,  MOULTHROP L C;  US4752518-A   POLYCARBON INC (POLY-Non-standard)   LOHRKE J L,  STERRY J M,  LYONS M D;  US4826181-A   UNION CARBIDE CORP (UNIC)   HOWARD R A;  US4895713-A   UNION CARBIDE CORP (UNIC)   GREINKE R A,  MERCURI R A,  BECK E J;  US4988583-A   CANADA MIN NAT DEFENCE (MIND);  CANADIAN GOVERNMENT (CNDG)   WATKINS D S,  DIRCKS K W,  EPP D G;  US5102855-A   UCAR CARBON TECHNOLOGY CORP (UNIC)   GREINKE R A,  LEWIS I C,  BALL D R;  US5108849-A   CANADA MIN NAT DEFENCE (MIND)   WATKINS D S,  DIRCKS K W,  EPP D G;  US5176863-A   UCAR CARBON TECHNOLOGY CORP (UNIC)   HOWARD R A;  US5215690-A   CORNING INC (CORG)   GOLINO C M,  HAGG S L,  LACHMAN I M,  NORDLIE L A;  US5225262-A   CHESTERTON CO A W (CHST)   LEDUC R D;  US5225379-A   UCAR CARBON TECHNOLOGY CORP (UNIC)   HOWARD R A;  US5228701-A   UNION CARBIDE CORP (UNIC)   GREINKE R A,  HOWARD R A;  US5266421-A   HUGHES AIRCRAFT CO (HUGA)   KINDLER A,  NASELOW A B,  TOWNSEND C W;  US5300370-A   BALLARD POWER SYSTEMS INC (BLRD)   VOSS H H,  WILKINSON D P,  WASHINGTON K B;  US5413738-A   UNION CARBIDE CHEM & PLASTICS TECHNOLOGY (UNIC)   LEWIS I C,  HOWARD R A;  US5476679-A   UCAR CARBON TECHNOLOGY CORP (UNIC)   LEWIS I C,  MILLER D J,  PIRRO T A;  US5494506-A   UCAR CARBON TECHNOLOGY CORP (UNIC)   WETULA J J,  FORD B M;  US5501729-A   UCAR CARBON TECHNOLOGY CORP (UNIC)   LEWIS I C,  PIRRO T A;  US5527363-A   BALLARD POWER SYSTEMS INC (BLRD)   WILKINSON D P,  LAMONT G J,  VOSS H H,  SCHWAB C;  US5531454-A   INDIAN HEAD INC (INHE)   BORNEBY H G;  US5683778-A   CROSIER R A (CROS-Individual)   CROSIER R A;  US5707755-A   GENERAL MOTORS CORP (GENK)   GROT S A;  US5824199-A   DU PONT DE NEMOURS & CO E I (DUPO)   SIMMONS W J,  LAW C G,  TRAINHAM J A,  NEWMAN J S,  EAMES D J;  US5885729-A   MARCHETTI G A (MARC-Individual)   MARCHETTI G A;  US5902762-A   UCAR CARBON TECHNOLOGY CORP (UNIC)   MERCURI R A,  CAPP J P,  GOUGH J J;  US5976726-A   BALLARD POWER SYSTEMS INC (BLRD)   WILKINSON D P,  STUMPER J,  CAMPBELL S A,  DAVIS M T,  LAMONT G J;  US5981098-A   PLUG POWER LLC (PLUG-Non-standard)   VITALE N G;  US6045677-A   NANOSCIENCES CORP (NANO-Non-standard)   STEINBECK J,  WINN D R,  BEETZ C P,  BOERSTLER R W;  US6060189-A   UCAR CARBON TECHNOLOGY CORP (UNIC)   MERCURI R A,  GOUGH J J;  US6087034-A   UCAR CARBON TECHNOLOGY CORP (UNIC)   MERCURI R A;  US6150049-A   PLUG POWER INC (PLUG-Non-standard)   NELSON M H,  CUSACK M J,  MILLER J R,  CARLSTROM C M;  US20050202245-A1   ;  US6319625-B1   GEMBERLING G J (GEMB-Individual)   GEMBERLING G J;  US6602631-B1   LYNNTECH POWER SYSTEMS LTD (LYNN-Non-standard)   CISAR A J,  MURPHY O J,  CLARKE E T;  WO2004038824-A2 -- US5266421-A   HUGHES AIRCRAFT CO (HUGA)   KINDLER A,  NASELOW A B,  TOWNSEND C W;  US5824199-A   DU PONT DE NEMOURS & CO E I (DUPO)   SIMMONS W J,  LAW C G,  TRAINHAM J A,  NEWMAN J S,  EAMES D J;  EP1558789-A2 -- US20010038909-A1   ;  US20010039701-A1   ;  US6217800-B1   SGL TECHNIC INC (SGLT-Non-standard)   HAYWARD T P;  WO2001043960-A1   ;  WO2001054213-A1   ;  WO2002027826-A1