US5348817-A -- US3728158-A   ;  US4125680-A   EXXON RES & ENG CO (ESSO)   SHROPSHIRE J A,  TSIEN H C;  US4429442-A   LUCAS IND LTD (LUCA)   THOMAS B J;  US4542082-A   CALIFORNIA INST OF TECHN (CALY)   ROWLETTE J J;  US4637970-A   ALLIED CORP (ALLC)   YEH L S R,  GRENNESS M,  FULLER R J;  US4683648-A   ALLIED CORP (ALLC)   YEH L S R,  GRENNESS M,  FULLER R J;  US4873161-A   RIPPEL W E (RIPP-Individual)   RIPPEL W E,  EDWARDS D B;  US4964878-A   ELECTROSOURCE INC (ELEC-Non-standard)   MORRIS C;  US5068160-A   ENSCI INC (ENSC-Non-standard)   CLOUGH T J,  MOULTON R J;  US5098801-A   GENERAL MOTORS CORP (GENK)   BORAM M E,  PARRISH R D;  US5106708-A   GENERAL MOTORS CORP (GENK)   BISH J R,  BORAM M E,  BRUTCHEN G W;  US5106709-A   GLOBE UNION INC (GLOB)   TEKKANAT B,  KOVACICH A A;  US5288566-A   GINATTA SPA (GINA-Non-standard)   GINATTA M V,  ROSSETTI F;  AU9454795-A   GNB BATTERY TECHNOLOGIES INC (GNBB)   LUND D L,  KUMP W H,  GROFF D W;  AU654531-B   GNB INC (GNBB)   RAO P;  US3202545-A   ;  US3466193-A   ;  US3565694-A   YARDNEY INT CORP (YARN);  US3573122-A   DOW CHEM CO (DOWC);  US3738871-A   ;  US3891412-A   ;  US4098967-A   GOULD INC (GOUN)   BIDDICK R E,  RUBISCHKO R J;  US4209575-A   DUNLOP AUSTRALIA LTD (DUNP)   MCDOWALL W L,  MAPLESDEN A K;  US4275130-A   CALIFORNIA INST OF TECHN (CALY)   RIPPEL W E,  EDWARDS D B;  US5298350-A   GNB INC (GNBB)   RAO P;  GB2278712-A -- EP538154-A1   SORAPEC SA (SORA-Non-standard)   BRONOEL G,  BESSE S,  TASSIN N;  GB651614-A   ;  GB1303856-A   ;  US4124746-A   INT NICKEL CO INC (INTN);  ESB INT CORP (ESBI)   NORDBLOM G F,  TURILLON P P,  HUSTON E L;  US4637970-A   ALLIED CORP (ALLC)   YEH L S R,  GRENNESS M,  FULLER R J;  FR2706081-A1 -- DE4131868-A1   ;  EP239343-A   ENSCI INC (ENSC-Non-standard)   PINSKY N,  ALKAITIS S A,  FITZGERALD M D,  BRAUNSTEIN D M;  EP538154-A1   SORAPEC SA (SORA-Non-standard)   BRONOEL G,  BESSE S,  TASSIN N;  EP239343-B1   ENSCI INC (ENSC-Non-standard)   PINSKY N,  ALKAITIS S A,  FITZGERALD M D,  BRAUNSTEIN D M;  EP538154-B1   SORAPEC SA (SORA-Non-standard)   BRONOEL G,  BESSE S,  TASSIN N;  JP63086354-A   ;  US4037031-A   IMPERIAL METAL IND LTD (IMIL);  US4324848-A   GENERAL ELECTRIC CO (GENE)   WILL F G;  US4539268-A   CALIFORNIA INST OF TECHN (CALY)   ROWLETTE J J;  WO1994011915-A1