;  WO9921239-A1 -- DE4443701-C1   DEGUSSA AG (DEGS)   FREUND A,  PANSTER P;  EP309337-A   ATOCHEM (AQOR);  ELF ATOCHEM SA (AQOR)   PLATZER O,  AMBLARD J,  BELLONI J,  MARIGNIER J L;  EP476765-A   DAISO CO LTD (OSAS)   HIRAI H,  HASHIMOTO H;  EP672765-A1   STUDIENGESELLSCHAFT KOHLE MBH (STUD)   REETZ M T,  HELBIG W,  QUAISER S;  EP476765-B1   DAISO CO LTD (OSAS)   HIRAI H,  HASHIMOTO H;  EP672765-B1   STUDIENGESELLSCHAFT KOHLE MBH (STUD)   REETZ M T,  HELBIG W,  QUAISER S;  JP05182672-A   ;  JP56155645-A   HITACHI LTD (HITA)   TAKEUCHI K,  MATSUDA S,  TAKEUCHI M,  OKADA H,  IMAHASHI J,  NAKAJIMA F;  JP61295388-A   JAPAN STORAGE BATTERY CO LTD (NIST)   FUJITA Y,  MUTO T;  US4407905-A   HITACHI LTD (HITA)   TAKEUCHI S,  KAHARA T,  IMAHASHI J,  TAKEUCHI M,  OKADA H,  OKABE S,  MATSUDA S;  US5294232-A   STONEHART ASSOC INC (STON-Non-standard);  WATANABE M (WATA-Individual);  TANAKA KIKINZOKU KOGYO KK (TANI)   SAKAIRI K,  YAMAMOTO Y;  US6462095-B1 -- US3311468-A   ;  US4166143-A   PROTOTECH CO (PROW)   PETROW H G,  ALLEN R J;  US4425261-A   YTKEMISKA INST (YTKE-Non-standard);  STENIUS P (STEN-Individual)   STENIUS P,  KIZLING J,  BOUTONNET M;  US5275999-A   TANAKA KIKINZOKU KOGYO KK (TANI);  STONEHART ASSOC INC (STON-Non-standard)   TSURUMI K,  SUGIMOTO H,  YAMAMOTO N,  NAKAMURA T,  STONEHART P;  US5294232-A   STONEHART ASSOC INC (STON-Non-standard);  WATANABE M (WATA-Individual);  TANAKA KIKINZOKU KOGYO KK (TANI)   SAKAIRI K,  YAMAMOTO Y;  US5861222-A   DEGUSSA AG (DEGS)   FISCHER A,  WENDT H,  ZUBER R;  US6074979-A   HOECHST RES & TECHNOLOGY DEUT GMBH & CO (FARH)   HAGEMEYER A,  DINGERDISSEN U,  MILLAUER H,  MANZ A,  KUEHLEIN K;  US6090858-A   GEORGIA TECH RES CORP (GTEK)   EL-SAYED M A;  US33149-E   PROTOTECH INC (PROW);  PROTOTECH CO (PROW);  EP1025600-B1 -- DE4443701-C1   DEGUSSA AG (DEGS)   FREUND A,  PANSTER P;  EP309337-A   ATOCHEM (AQOR);  ELF ATOCHEM SA (AQOR)   PLATZER O,  AMBLARD J,  BELLONI J,  MARIGNIER J L;  EP476765-A   DAISO CO LTD (OSAS)   HIRAI H,  HASHIMOTO H;  EP672765-A1   STUDIENGESELLSCHAFT KOHLE MBH (STUD)   REETZ M T,  HELBIG W,  QUAISER S;  JP05182672-A   ;  JP56155645-A   HITACHI LTD (HITA)   TAKEUCHI K,  MATSUDA S,  TAKEUCHI M,  OKADA H,  IMAHASHI J,  NAKAJIMA F;  JP61295388-A   JAPAN STORAGE BATTERY CO LTD (NIST)   FUJITA Y,  MUTO T;  US4407905-A   HITACHI LTD (HITA)   TAKEUCHI S,  KAHARA T,  IMAHASHI J,  TAKEUCHI M,  OKADA H,  OKABE S,  MATSUDA S;  US5294232-A   STONEHART ASSOC INC (STON-Non-standard);  WATANABE M (WATA-Individual);  TANAKA KIKINZOKU KOGYO KK (TANI)   SAKAIRI K,  YAMAMOTO Y