US2004163312-A1 -- US3108857-A   ;  US3188179-A   ;  US3627478-A   MINE SAFETY APPLIANCES CO (MINJ);  US3771261-A   PULLMAN INC (PULL);  US5360679-A   BALLARD POWER SYSTEMS INC (BLRD)   LOUIE C,  WATKINS D S,  COHEN R,  BUSWELL R F,  CLAUSI J V;  US5932141-A   HALDOR TOPSOE AS (TOPS)   ROSTRUP-NIELSEN J,  CHRISTENSEN P S,  HANSEN V L;  US5965473-A   UOP LLC (UNVO)   SECHRIST P A,  ROBINSON D W;  US6007699-A   ENERGY & ENVIRONMENTAL RES CORP (ENER-Non-standard)   COLE J A;  US6103143-A   AIR PROD & CHEM INC (AIRP)   SIRCAR S,  HUFTON J R,  NATARAJ S;  US20020085967-A1   ;  US20020110503-A1   ;  US20030150163-A1   ;  US6190623-B1   UOP LLC (UNVO)   SANGER R J,  SENETAR J J,  VANDEN BUSSCHE K,  TOWLER G P,  DOSHI K J;  US6660680-B1   SUPERIOR MICROPOWDERS LLC (SUPE-Non-standard)   HAMPDEN-SMITH M J,  KODAS T T,  ANTANASSOV P,  KUNZE K,  NAPOLITANO P,  BHATIA R,  DERICOTTE D,  ATANASSOVA P;  US6685762-B1   SUPERIOR MICROPOWDERS LLC (SUPE-Non-standard)   BREWSTER J H,  DERICOTTE D E,  HAMPDEN-SMITH M J,  KODAS T T,  POWELL Q H;  US6551733-B2   PLUG POWER INC (PLUG-Non-standard)   PESCHKE N,  RUSH K M;  US6682838-B2   STEVENS J F (STEV-Individual)   STEVENS J F;  WO2004076346-A2 -- US6190623-B1   UOP LLC (UNVO)   SANGER R J,  SENETAR J J,  VANDEN BUSSCHE K,  TOWLER G P,  DOSHI K J;  US6551733-B2   PLUG POWER INC (PLUG-Non-standard)   PESCHKE N,  RUSH K M;  EP1603994-A2 -- EP1018485-A1   AIR PROD & CHEM INC (AIRP)   SIRCAR S,  HUFTON J R,  NATARAJ S;  US20020155329-A1   ;  JP4463803-B2 -- JP11263988-A   ;  JP11294259-A   ;  JP2002097479-A   HALDOR TOPSOE AS (TOPS)   AASBERG-PETERSEN K,  CHRISTENSEN T S;  JP2004217505-A   OSAKA GAS CO LTD (OSAG)   OKADA O,  YOKOYAMA K;  JP2004244268-A   ;  JP2004248565-A   ;  SG173220-A1 -- DE10158514-A1   PLUG POWER INC (PLUG-Non-standard)   PESCHKE N,  RUSH K M;  US6190623-B1   UOP LLC (UNVO)   SANGER R J,  SENETAR J J,  VANDEN BUSSCHE K,  TOWLER G P,  DOSHI K J;  US6352792-B1   CLEAN FUEL GENERATION LLC (CLEA-Non-standard)   PARCHAMAZAD I;  WO2002085783-A2