WO200120701-A1 -- US4449992-A   TEIJIN LTD (TEIJ)   YAMADA T,  KURISU S,  AZUMA S;  US4876162-A   UNITED TECHNOLOGIES CORP (UNAC)   MCELROY J F;  US5064732-A   INT FUEL CELLS CORP (ITFU)   MEYER A P;  US5503944-A   INT FUEL CELLS CORP (ITFU)   MARGIOTT P R,  MEYER A P,  SCHEFFLER G W;  US5826434-A   NOVELAIRE TECHNOLOGIES LLC (NOVE-Non-standard)   GOLAND S K,  BELDING W A;  US6013385-A   EMPRISE CORP (EMPR-Non-standard)   DUBOSE R A;  US6274259-B1 -- US4449992-A   TEIJIN LTD (TEIJ)   YAMADA T,  KURISU S,  AZUMA S;  US4876162-A   UNITED TECHNOLOGIES CORP (UNAC)   MCELROY J F;  US5064732-A   INT FUEL CELLS CORP (ITFU)   MEYER A P;  US5503944-A   INT FUEL CELLS CORP (ITFU)   MARGIOTT P R,  MEYER A P,  SCHEFFLER G W;  US5573866-A   INT FUEL CELLS CORP (ITFU)   MARICLE D L,  VAN DINE L L;  US5826434-A   NOVELAIRE TECHNOLOGIES LLC (NOVE-Non-standard)   GOLAND S K,  BELDING W A;  US5840414-A   INT FUEL CELLS CORP (ITFU)   BETT J A S,  WHEELER D J,  BUSHNELL C;  US6013385-A   EMPRISE CORP (EMPR-Non-standard)   DUBOSE R A;  JP4750334-B2 -- JP11233129-A   MITSUBISHI JUKOGYO KK (MITO)   NAGAYASU H,  MIYAMOTO H,  IKEMOTO Y;  JP54082636-A   ;  JP61024171-A   MITSUBISHI DENKI KK (MITQ)   MATSUMURA M,  MIZUMOTO Y;  JP61039459-A   HITACHI LTD (HITA);  HITACHI ENG CO LTD (HITJ)   NOGUCHI Y,  ARAKAWA T,  NAGASAKI N,  SUGITA S,  TAKEUCHI M;  JP2001511591-A   EMPRISE CORP (EMPR-Non-standard)   DUBOSE R A;  JP2002518815-A   INT FUEL CELLS CORP (ITFU)   GORMAN M E;  JP2002519817-A   INT FUEL CELLS CORP (ITFU)   FULLER T F,  MARGIOTT P R,  VAN DINE L L;  JP2002519818-A   INT FUEL CELLS CORP (ITFU)   FULLER T F,  MARGIOTT P R,  VAN DINE L L;  JP2002526905-A   INT FUEL CELLS LLC (ITFU)   BREAULT R D,  VAN DINE L L,  FULLER T F;  JP2003502826-A   INT FUEL CELLS LLC (ITFU)   VAN DINE L L,  GRASSO A P;  JP08502855-W   ;  JP11508726-W   INT FUEL CELLS CORP (ITFU)   MARGIOTT P R,  MEYER A P,  SCHEFFLER G W;  US5503944-A   INT FUEL CELLS CORP (ITFU)   MARGIOTT P R,  MEYER A P,  SCHEFFLER G W;  US5853909-A   INT FUEL CELLS LLC (ITFU-Non-standard)   REISER C