EP664570-A1 -- DE3826281-A   ;  US5211933-A   BELL COMMUNICATIONS RES (TELF)   BARBOUX P,  SHOKOOHI F K,  TARASCON J;  US5225296-A   RICOH KK (RICO);  UNITIKA LTD (NIRA)   OSAWA T,  KAHATA T,  ECHIGO Y,  SAKAIDA T,  ASAMI K;  WO1992018425-A1   ;  WO1993008612-A1   ;  FR2715508-A1 -- DE3826281-A   ;  EP127373-A   HITACHI LTD (HITA)   KANEHORI K,  MIYAUCHI K,  ITO Y,  KIRINO F,  KUDO T;  EP251677-A   SHARP KK (SHAF)   WADA H,  YOSHIDA M,  NAKAJIMA S,  TAJIMA Y,  KANAGISAWA N,  MOHRI M,  KASAHARA M,  TANAKA H;  EP417802-A   CANON KK (CANO)   SAITO N;  EP460617-A   MITSUBISHI PETROCHEMICAL CO LTD (MITP)   MIYABAYASHI M,  HAYASHI M;  EP612117-A2   SHARP KK (SHAF)   YAMADA K,  TANAKA H,  YONEDA T,  MITATE T,  KITAYAMA H;  EP460617-A3   MITSUBISHI PETROCHEMICAL CO LTD (MITP)   MIYABAYASHI M,  HAYASHI M;  EP127373-B   HITACHI LTD (HITA)   KANEHORI K,  MIYAUCHI K,  ITO Y,  KIRINO F,  KUDO T;  EP251677-B1   SHARP KK (SHAF)   WADA H,  YOSHIDA M,  NAKAJIMA S,  TAJIMA Y,  KANAGISAWA N,  MOHRI M,  KASAHARA M,  TANAKA H;  EP417802-B1   CANON KK (CANO)   SAITO N;  EP460617-B1   MITSUBISHI PETROCHEMICAL CO LTD (MITP)   MIYABAYASHI M,  HAYASHI M;  EP612117-B1   SHARP KK (SHAF)   YAMADA K,  TANAKA H,  YONEDA T,  MITATE T,  KITAYAMA H;  WO1990005387-A   ;  WO1992018425-A1   ;  WO1993008612-A1   ;  US5569561-A -- DE3826281-A   ;  EP127373-A   HITACHI LTD (HITA)   KANEHORI K,  MIYAUCHI K,  ITO Y,  KIRINO F,  KUDO T;  EP251677-A   SHARP KK (SHAF)   WADA H,  YOSHIDA M,  NAKAJIMA S,  TAJIMA Y,  KANAGISAWA N,  MOHRI M,  KASAHARA M,  TANAKA H;  EP417802-A   CANON KK (CANO)   SAITO N;  EP460617-A   MITSUBISHI PETROCHEMICAL CO LTD (MITP)   MIYABAYASHI M,  HAYASHI M;  EP612117-A2   SHARP KK (SHAF)   YAMADA K,  TANAKA H,  YONEDA T,  MITATE T,  KITAYAMA H;  US4049887-A   EXXON RES & ENG CO (ESSO)   WHITTINGHAM M S;  US4104451-A   EXXON RES & ENG CO (ESSO)   KLEMANN L P,  NEWMAN G H;  US5110696-A   BELL COMMUNICATIONS (TELF)   SHOKOOHI F K,  TARASCON J M;  US5202201-A   CNRS CENT NAT RECH SCI (CNRS)   MEUNIER G,  DORMOY R,  LEVASSEUR A;  US5211933-A   BELL COMMUNICATIONS RES (TELF)   BARBOUX P,  SHOKOOHI F K,  TARASCON J;  US5225296-A   RICOH KK (RICO);  UNITIKA LTD (NIRA)   OSAWA T,  KAHATA T,  ECHIGO Y,  SAKAIDA T,  ASAMI K;  US33149-E   PROTOTECH INC (PROW);  PROTOTECH CO (PROW);  WO1990005387-A   ;  WO1992018425-A1   ;  WO1993008612-A1   ;  EP664570-B1 -- DE3826281-A   ;  WO1992018425-A1   ;  WO1993008612-A1   ;  JP3602591-B2 -- JP06506657-W