US2005112440-A1 -- US5438082-A   HOECHST AG (FARH)   HELMER-METZMANN F,  OSAN F,  SCHNELLER A,  RITTER H,  LEDJEFF K,  NOLTE R,  THORWIRTH R;  US5852128-A   CLARIANT AG (CLRN)   PADMANABAN M,  PAWLOWSKI G,  KINOSHITA Y,  OKAZAKI H,  MASUDA S,  FUNATO S,  YAMAMOTO T;  US6033828-A   SHINETSU CHEM IND CO LTD (SHIE)   SHIMADA J,  WATANABE O,  WATANABE S,  NAGURA S,  ISHIHARA T;  US20020188097-A1   ;  US6194474-B1   UNIV STUTTGART LEHRSTUHL & INST CHEM VER (UYST-Non-standard)   KERRES J,  CUI W;  US6210859-B1   KOREA KUMHO PETROCHEMICAL CO LTD (KKPT)   JEON H P,  KIM S J,  PARK J H,  LEE J B;  US6759483-B2   SHEEHAN M T (SHEE-Individual);  SOUNIK J R (SOUN-Individual)   SHEEHAN M T,  SOUNIK J R;  US7378471-B2 -- US5438082-A   HOECHST AG (FARH)   HELMER-METZMANN F,  OSAN F,  SCHNELLER A,  RITTER H,  LEDJEFF K,  NOLTE R,  THORWIRTH R;  US5852128-A   CLARIANT AG (CLRN)   PADMANABAN M,  PAWLOWSKI G,  KINOSHITA Y,  OKAZAKI H,  MASUDA S,  FUNATO S,  YAMAMOTO T;  US6033828-A   SHINETSU CHEM IND CO LTD (SHIE)   SHIMADA J,  WATANABE O,  WATANABE S,  NAGURA S,  ISHIHARA T;  US20020188097-A1   ;  US6194474-B1   UNIV STUTTGART LEHRSTUHL & INST CHEM VER (UYST-Non-standard)   KERRES J,  CUI W;  US6210859-B1   KOREA KUMHO PETROCHEMICAL CO LTD (KKPT)   JEON H P,  KIM S J,  PARK J H,  LEE J B;  US6759483-B2   SHEEHAN M T (SHEE-Individual);  SOUNIK J R (SOUN-Individual)   SHEEHAN M T,  SOUNIK J R;  US42299-E -- JP02238093-A   ;  JP08512358-W   ;  US5422411-A   BALLARD POWER SYSTEMS INC (BLRD)   WEI J,  STONE C,  STECK A E;  US5438082-A   HOECHST AG (FARH)   HELMER-METZMANN F,  OSAN F,  SCHNELLER A,  RITTER H,  LEDJEFF K,  NOLTE R,  THORWIRTH R;  US5852128-A   CLARIANT AG (CLRN)   PADMANABAN M,  PAWLOWSKI G,  KINOSHITA Y,  OKAZAKI H,  MASUDA S,  FUNATO S,  YAMAMOTO T;  US6033828-A   SHINETSU CHEM IND CO LTD (SHIE)   SHIMADA J,  WATANABE O,  WATANABE S,  NAGURA S,  ISHIHARA T;  US20020188097-A1   ;  US6194474-B1   UNIV STUTTGART LEHRSTUHL & INST CHEM VER (UYST-Non-standard)   KERRES J,  CUI W;  US6210859-B1   KOREA KUMHO PETROCHEMICAL CO LTD (KKPT)   JEON H P,  KIM S J,  PARK J H,  LEE J B;  US6759483-B2   SHEEHAN M T (SHEE-Individual);  SOUNIK J R (SOUN-Individual)   SHEEHAN M T,  SOUNIK J R