WO200180992-A2 -- EP629578-A1   SHELL INT RES MIJ BV (SHEL)   JACOBS L L G,  LEDNOR P W,  VONKEMAN K A;  US4491640-A   ;  US4863893-A   ENGELHARD CORP (ENGH)   LEE H C,  FARRAUTO R J,  HATFIELD R W;  US5232891-A   HERAEUS GMBH W C (HERA)   HORMANN M,  KOTOWSKI S,  LUPTON D F,  WERNER R,  SCHOLZ F,  STREB B,  VIEL A;  US5278124-A   ;  US6725249-B2 -- US5799002-A   MICROSOFT CORP (MICT)   KRISHNAN M R;  US5915095-A   NCR CORP (NATC)   MISKOWIEC N L;  US6003079-A   HEWLETT-PACKARD CO (HEWP)   FRIEDRICH R J,  ROLIA J;  US6041354-A   AT & T IPM CORP (AMTT)   BILIRIS A,  PANAGOS E,  HILLYER B K;  US6044060-A   ;  US6141686-A   DETERMINISTIC NETWORKS INC (DETE-Non-standard)   THOMAS C N,  JACKOWSKI S J;  US20020143847-A1   ;  US6282562-B1   NET REALITY (NETR-Non-standard)   SIDI E,  PONGRANZ S,  SOMECH O,  RAAB I,  BIELOUS Y;  US6339784-B1   AMERICA ONLINE INC (AOLS)   MORRIS H W,  BOSCO E,  LIPPKE D L,  STEELE C A;  US6343085-B1   MICROSOFT CORP (MICT)   KRISHNAN M R,  ALAM B;  US6345038-B1   INT BUSINESS MACHINES CORP (IBMC)   SELINGER C R;  US6746658-B2 -- EP303438-A   DAVY MCKEE CORP (POGC)   DUNSTER M,  KORCHNAK J D;  EP629578-A1   SHELL INT RES MIJ BV (SHEL)   JACOBS L L G,  LEDNOR P W,  VONKEMAN K A;  EP640559-A1   SNAMPROGETTI SPA (SNAM)   SANFILIPPO D,  BASINI L,  MARCHIONNA M;  EP576096-A2   SHELL INT RES MIJ BV (SHEL)   VONKEMAN K A,  JACOBS L L G;  US4087259-A   TOYOTA CHUO KENKYUSHO KK (TOYW);  US4491640-A   ;  US4863893-A   ENGELHARD CORP (ENGH)   LEE H C,  FARRAUTO R J,  HATFIELD R W;  US5232891-A   HERAEUS GMBH W C (HERA)   HORMANN M,  KOTOWSKI S,  LUPTON D F,  WERNER R,  SCHOLZ F,  STREB B,  VIEL A;  US5278124-A   ;  US5510056-A   SHELL INT RES MIJ BV (SHEL)   JACOBS L L G,  LEDNOR P W,  LIMAHELU A G G,  SCHOONEBEEK R J,  VONKEMAN K A;  US5639401-A   SHELL INT RES MIJ BV (SHEL);  SHELL CANADA LTD (SHEL)   JACOBS L L G,  LEDNOR P W,  VAN LOON P J M,  OOSTERVELD M,  VONKEMAN K A,  WENTINCK H M,  VAN DER ZWET G P,  LANGE J P;  US5648582-A   UNIV MINNESOTA (MINU)   HICKMAN D A,  SCHMIDT L D;  US5654491-A   UNIV MINNESOTA (MINU)   SCHMIDT L D,  GOETSCH D A;  US5883138-A   EXXON RES & ENG CO (ESSO)   HERSHKOWITZ F,  DECKMAN H W,  REYNOLDS R P,  GONATAS C P,  FULTON J W,  SCHOENMAN L,  ITO J I,  CLAVENNA L R;  WO1997031738-A1   ;  WO1999035082-A1