WO200169706-A1 -- EP875524-A2   JOHNSON MATTHEY PLC (JOHO)   DENTON J,  GASCOYNE J M,  HARDS G A,  RALPH T R;  US5916505-A   LYNNTECH INC (LYNN-Non-standard)   MURPHY O J,  HITCHENS G D,  GONZALEZ-MARTIN A,  CISAR A J;  US2003031909-A1 -- US3282875-A   DU PONT DE NEMOURS & CO E I (DUPO);  US4329435-A   ASAHI KASEI KOGYO KK (ASAH);  US4330654-A   DOW CHEM CO (DOWC)   EZZELL B R,  CARL W P,  MOD W A;  US4358545-A   DOW CHEM CO (DOWC)   EZZELL B R,  CARL W P,  MOD W A;  US4417969-A   DOW CHEM CO (DOWC)   EZZELL B R,  CARL W P,  MOD W A;  US4433082-A   DU PONT DE NEMOURS & CO E I (DUPO)   GROT W G;  US4610762-A   DOW CHEM CO (DOWC)   BIRDWELL J D;  US4940525-A   DOW CHEM CO (DOWC)   EZZELL B R,  CARL W P;  US5094995-A   DU PONT DE NEMOURS & CO E I (DUPO)   BUTT M H,  WALLER F J;  US5384019-A   DU PONT DE NEMOURS & CO E I (DUPO)   BATMAN J M,  KEATING J T,  BAUCOM E I;  US5438082-A   HOECHST AG (FARH)   HELMER-METZMANN F,  OSAN F,  SCHNELLER A,  RITTER H,  LEDJEFF K,  NOLTE R,  THORWIRTH R;  US5468574-A   DAIS CORP (DAIS-Non-standard)   RIDER J N,  SERPICO J,  EHRENBERG S G,  WNEK G E;  US5547551-A   GORE & ASSOC INC W L (GORE)   ZUCKERBROD D,  HOBSON A R,  BAHAR B,  KOLDE J A;  US5595676-A   IMPERIAL CHEM IND PLC (ICIL)   BARNES D J,  GILDAY J P;  US5599639-A   HOECHST CELANESE CORP (FARH)   OGATA N,  SANSONE M J,  ONORATO F J;  US5635039-A   LYNNTECH INC (LYNN-Non-standard)   HITCHENS G D,  MURPHY O J,  CISAR A J,  GONZALEZ-MARTIN A;  US5834523-A   BALLARD POWER SYSTEMS INC (BLRD)   STECK A E,  STONE C;  US5916505-A   LYNNTECH INC (LYNN-Non-standard)   MURPHY O J,  HITCHENS G D,  GONZALEZ-MARTIN A,  CISAR A J;  US5958616-A   LYNNTECH INC (LYNN-Non-standard)   SALINAS C,  MURPHY O J,  MOADDEL H,  WENG D,  SIMPSON S F,  FRANASZCZUK K;  US6103078-A   LYNNTECH INC (LYNN-Non-standard)   JABS H,  ANDREWS C C,  HITCHEMS G D,  WHITE W,  JACKSON G W,  TENNAKOON C L C,  MURPHY O J;  US7052792-B2 -- EP331321-A   IMPERIAL CHEM IND PLC (ICIL)   FIELDING H C,  GAMLEN P H,  SHIRLEY I M;  EP345964-A   IMPERIAL CHEM IND PLC (ICIL)   MARSHALL A,  PILKINGTON R S,  NEWBOLD A J;  EP791974-A1   JOHNSON MATTHEY PLC (JOHO)   DENTON J,  GASCOYNE J M,  POTTER R J;  EP574791-A2   HOECHST AG (FARH)   HELMER-METZMANN F,  OSAN F,  SCHNELLER A,  RITTER H,  LEDJEFF K,  NOLTE R,  THORWIRTH R;  EP875524-A2   JOHNSON MATTHEY PLC (JOHO)   DENTON J,  GASCOYNE J M,  HARDS G A,  RALPH T R;  GB6429-A   ;  GB1050694-A   ;  US3282875-A   DU PONT DE NEMOURS & CO E I (DUPO);  US4329435-A   ASAHI KASEI KOGYO KK (ASAH);  US4330654-A   DOW CHEM CO (DOWC)   EZZELL B R,  CARL W P,  MOD W A;  US4358545-A   DOW CHEM CO (DOWC)   EZZELL B R,  CARL W P,  MOD W A;  US4417969-A   DOW CHEM CO (DOWC)   EZZELL B R,  CARL W P,  MOD W A;  US4433082-A   DU PONT DE NEMOURS & CO E I (DUPO)   GROT W G;  US4610762-A   DOW CHEM CO (DOWC)   BIRDWELL J D;  US4940525-A   DOW CHEM CO (DOWC)   EZZELL B R,  CARL W P;  US5094995-A   DU PONT DE NEMOURS & CO E I (DUPO)   BUTT M H,  WALLER F J;  US5384019-A   DU PONT DE NEMOURS & CO E I (DUPO)   BATMAN J M,  KEATING J T,  BAUCOM E I;  US5438082-A   HOECHST AG (FARH)   HELMER-METZMANN F,  OSAN F,  SCHNELLER A,  RITTER H,  LEDJEFF K,  NOLTE R,  THORWIRTH R;  US5468574-A   DAIS CORP (DAIS-Non-standard)   RIDER J N,  SERPICO J,  EHRENBERG S G,  WNEK G E;  US5547551-A   GORE & ASSOC INC W L (GORE)   ZUCKERBROD D,  HOBSON A R,  BAHAR B,  KOLDE J A;  US5595676-A   IMPERIAL CHEM IND PLC (ICIL)   BARNES D J,  GILDAY J P;  US5599639-A   HOECHST CELANESE CORP (FARH)   OGATA N,  SANSONE M J,  ONORATO F J;  US5635039-A   LYNNTECH INC (LYNN-Non-standard)   HITCHENS G D,  MURPHY O J,  CISAR A J,  GONZALEZ-MARTIN A;  US5834523-A   BALLARD POWER SYSTEMS INC (BLRD)   STECK A E,  STONE C;  US5916505-A   LYNNTECH INC (LYNN-Non-standard)   MURPHY O J,  HITCHENS G D,  GONZALEZ-MARTIN A,  CISAR A J;  US5958616-A   LYNNTECH INC (LYNN-Non-standard)   SALINAS C,  MURPHY O J,  MOADDEL H,  WENG D,  SIMPSON S F,  FRANASZCZUK K;  US6103078-A   LYNNTECH INC (LYNN-Non-standard)   JABS H,  ANDREWS C C,  HITCHEMS G D,  WHITE W,  JACKSON G W,  TENNAKOON C L C,  MURPHY O J;  WO1994016002-A1   ;  WO1995008581-A1   ;  WO1997025369-A1