US2002055024-A1 -- US3968999-A   KELLER CORP (KELL-Non-standard)   KELLER L J;  US3982962-A   UNITED TECHNOLOGIES CORP (UNAC);  US4820594-A   HITACHI LTD (HITA)   SUGITA S,  KOYAMA K H N,  SHIIN A K,  SAKAGUCHI S,  KURODA M,  NOGUCHI Y;  US5043232-A   INT FUEL CELLS CORP (ITFU)   LANDAU M B,  TANRIKUT Y B;  US5314761-A   MANNESMANN AG (MANS);  KTI GROUP BV (KTIK-Non-standard)   PIETROGRAN P,  GIACOBBE F;  US5335628-A   AQUA CHEM INC (AQAC)   DUNBAR W R;  US5340663-A   INT FUEL CELLS CORP (ITFU)   BUSWELL R F,  VARTANIAN G;  US5401589-A   VICKERS SHIPBUILDING & ENG (VICS);  CJBD LTD (CJBD-Non-standard)   PALMER I,  SEYMOUR C M,  DAMS R A J;  US5554453-A   ENERGY RES CORP (ENER-Non-standard)   LEE A,  STEINFELD G,  MEYERS S J;  US5645950-A   DAIMLER-BENZ AG (DAIM)   FLECK W;  US5811201-A   SOUTHERN CALIFORNIA EDISON CO (SCAL-Non-standard)   SKOWRONSKI M J;  US5840437-A   SULZER INNOTEC AG (SULZ)   DIETHELM R;  US5998053-A   ;  US6068941-A   INT FUEL CELLS LLC (ITFU-Non-standard)   FULLER T F,  WHEELER D J;  US6103410-A   INT FUEL CELLS CORP (ITFU)   FULLER T F,  WHEELER D J;  US6348278-B1   MOBIL OIL CORP (MOBI)   LAPIERRE R B,  PARTRIDGE R D;  US6365289-B1   GENERAL MOTORS CORP (GENK)   LEE J H,  SIEPIERSKI J S,  WOODY G R;  US6902838-B2 -- JP01176668-A   ;  US3968999-A   KELLER CORP (KELL-Non-standard)   KELLER L J;  US4820594-A   HITACHI LTD (HITA)   SUGITA S,  KOYAMA K H N,  SHIIN A K,  SAKAGUCHI S,  KURODA M,  NOGUCHI Y;  US5043232-A   INT FUEL CELLS CORP (ITFU)   LANDAU M B,  TANRIKUT Y B;  US5314761-A   MANNESMANN AG (MANS);  KTI GROUP BV (KTIK-Non-standard)   PIETROGRAN P,  GIACOBBE F;  US5335628-A   AQUA CHEM INC (AQAC)   DUNBAR W R;  US5340663-A   INT FUEL CELLS CORP (ITFU)   BUSWELL R F,  VARTANIAN G;  US5401589-A   VICKERS SHIPBUILDING & ENG (VICS);  CJBD LTD (CJBD-Non-standard)   PALMER I,  SEYMOUR C M,  DAMS R A J;  US5554453-A   ENERGY RES CORP (ENER-Non-standard)   LEE A,  STEINFELD G,  MEYERS S J;  US5645950-A   DAIMLER-BENZ AG (DAIM)   FLECK W;  US5811201-A   SOUTHERN CALIFORNIA EDISON CO (SCAL-Non-standard)   SKOWRONSKI M J;  US5840437-A   SULZER INNOTEC AG (SULZ)   DIETHELM R;  US5998053-A   ;  US6068941-A   INT FUEL CELLS LLC (ITFU-Non-standard)   FULLER T F,  WHEELER D J;  US6103410-A   INT FUEL CELLS CORP (ITFU)   FULLER T F,  WHEELER D J;  US6348278-B1   MOBIL OIL CORP (MOBI)   LAPIERRE R B,  PARTRIDGE R D;  US6365289-B1   GENERAL MOTORS CORP (GENK)   LEE J H,  SIEPIERSKI J S,  WOODY G R