;  EP1306409-A2 -- DE10064656-A1   TICONA GMBH (TICN)   HOFMANN A,  RADDEN P,  REIL F,  REUSCHEL G,  SPARENBERG B;  EP1020941-A2   NICHIAS CORP (NIAS)   TANEMOTO M,  SUZUKI S,  SHIRAISHI M,  UEDA K;  EP1020941-B1   NICHIAS CORP (NIAS)   TANEMOTO M,  SUZUKI S,  SHIRAISHI M,  UEDA K;  JP10074527-A   DU PONT DE NEMOURS & CO E I (DUPO)   MUKOHYAMA A,  TAKEDA T,  UCHIDA M,  FUKUOKA Y;  JP10208766-A   SUMITOMO ELECTRIC IND CO (SUME);  KANSAI DENRYOKU KK (KANT)   KUWABARA M,  SHIGEMATSU T,  KUMAMOTO T,  TOKUDA N;  JP2002213659-A   ;  US3964930-A   UNITED TECHNOLOGIES CORP (UNAC)   REISER C A;  US4769296-A   BASF AG (BADI)   STERZEL H J;  US4786086-A   INT FUEL CELLS CORP (ITFU);  TOSHIBA KK (TOKE)   GUTHRIE R J,  MIENTEK A P;  WO2002020135-A2   ;  US2003072987-A1 -- US3964930-A   UNITED TECHNOLOGIES CORP (UNAC)   REISER C A;  US4769296-A   BASF AG (BADI)   STERZEL H J;  US4786086-A   INT FUEL CELLS CORP (ITFU);  TOSHIBA KK (TOKE)   GUTHRIE R J,  MIENTEK A P;  US5313987-A   HUELS AG (CHEM)   ROEBER S,  MUEGGE J,  FEINAUER R,  JADAMUS H,  HERRMANN H,  RIES H;  US5449024-A   HUELS AG (CHEM)   ROEBER S,  FEINAUER R,  HERRMANN H,  JADAMUS H,  MUEGGE J,  RIES H;  US5500263-A   HUELS AG (CHEM)   ROEBER S,  JADAMUS H,  BOEER M,  FEINAUER R,  HERRMANN H,  RIES H;  US5512342-A   HUELS AG (CHEM)   ROEBER S,  JADAMUS H,  BOEER M,  FEINAUER R,  HERMANN H,  RIES H;  US5554426-A   HUELS AG (CHEM)   ROEBER S,  JADAMUS H,  RIES H;  US20020054814-A1   ;  US20020142118-A1   ;  US20020145285-A1   ;  US20040202908-A1   ;  US20040265527-A1   ;  US6355358-B1   DEGUSSA-HUELS AG (DEGS)   HAEGER H,  BOEER M,  SCHMITZ G,  OENBRINK G,  RICHTER R;  US6428866-B1   HUELS AG (CHEM)   JADAMUS H,  RIES H,  ROEBER S;  US6432177-B1   DONALDSON CO INC (DOND)   DALLAS A J,  GOGINS M A,  GRAHAM K M,  ADAMEK D E,  SKUSTER R;  US6645651-B2   HOCKADAY R G (HOCK-Individual);  TURNER P S (TURN-Individual);  BRADFORD Z R (BRAD-Individual);  DEJOHN M D (DEJO-Individual);  NAVAS C J (NAVA-Individual);  UHRICH F W (UHRI-Individual);  VAZ H L (VAZH-Individual);  VAZUL L L (VAZU-Individual)   HOCKADAY R G,  TURNER P S,  BRADFORD Z R,  DEJOHN M D,  NAVAS C J,  UHRICH F W,  VAZ H L,  VAZUL L L;  US6756148-B2   MATSUSHITA ELECTRIC IND CO LTD (MATU)   HOJO N,  TANAKA A,  SHIBUTANI S,  OKADA Y;  US6792978-B2   GOODYEAR TIRE & RUBBER CO (GOOD)   AINSWORTH C L;  US6794076-B2   BUSENBENDER I (BUSE-Individual)   BUSENBENDER I