WO9918621-A1 -- DE3920129-A   RICOH KK (RICO);  FUJI ELECTRIC MFG CO LTD (FJIE)   YONEYAMA S,  OHSAWA T,  KIMURA O,  KABATA T;  DE4431773-A1   ;  DE3920129-C   RICOH KK (RICO);  FUJI ELECTRIC MFG CO LTD (FJIE)   YONEYAMA S,  OHSAWA T,  KIMURA O,  KABATA T;  EP557250-A1   ENEA ENTE NUOVE TECNOLOGIE ENERGIA (CNEN)   SCROSATI B,  CROCE F,  CAPUANO F;  JP58206078-A   ;  WO1994024715-A1   ;  US6642294-B1 -- DE4431773-A1   ;  EP537930-A1   DAIICHI KOGYO SEIYAKU CO LTD (DAII)   KONO M,  MOTOGAMI K,  MORI S;  EP557250-A1   ENEA ENTE NUOVE TECNOLOGIE ENERGIA (CNEN)   SCROSATI B,  CROCE F,  CAPUANO F;  EP559317-A1   DAIICHI KOGYO SEIYAKU CO LTD (DAII);  YUASA CORP (YUAS)   TAKEDA K,  NODA T,  KONO M,  IZUTI S,  MOTOGAMI K,  IMACHI H,  MORI S M;  EP576686-A1   DAIICHI KOGYO SEIYAKU CO LTD (DAII);  YUASA CORP (YUAS)   KONO M,  MORI S,  TAKEDA K,  IZUTI S;  EP585072-A1   ;  EP599534-A1   MITSUI PETROCHEMICAL IND LTD (MITC);  SONY CORP (SONY)   YOKOYAMA K,  HIWARA A,  FUJITA S,  OMARU A;  EP698933-A1   HITACHI MAXELL KK (HITM)   KITA F,  HIGASHIGUCHI M,  KAWAKAMI A;  EP696077-A2   MITSUI PETROCHEMICAL IND LTD (MITC);  SONY CORP (SONY)   YOKOYAMA K,  FUJITA S,  HIWARA A,  NARUSE Y,  TORIIDA M,  OMARU A;  JP07161357-A   ;  JP09115548-A   ;  JP58206078-A   ;  JP61256573-A   ;  US4129543-A   HI-TECH IND INC (HITE-Non-standard)   KAPLAN N;  US4183843-A   ALUMINUM CO OF AMERICA (ALUM)   KOENIG J J,  HSIEH P;  US5011751-A   RICOH KK (RICO);  FUJI ELECTRIC MFG CO LTD (FJIE)   YONEYAMA S,  OHSAWA T,  KIMURA O,  KABATA T;  US5047308-A   FUJI PHOTO FILM CO LTD (FUJF)   USAMI T;  US5108832-A   PPG IND INC (PITT)   NUGENT R M,  WARD T A,  GREIGGER P P,  SEINER J A;  US5279910-A   JAPAN ATOMIC ENERGY RES INST (JAAT);  YUASA CORP (YUAS)   IZUTI S,  NODA T,  TAKEDA K,  SASAKI T,  ISHIGAKI I;  US5674437-A   GLOTEX CORP (GLOT-Non-standard)   GEISEL R H;  US5681669-A   UBE IND LTD (UBEI)   YOSHIO M,  NAKAMURA H,  YOSHITAKE H,  TANAKA H;  US6258471-B1   EASTMAN KODAK CO (EAST)   VERDONE J A,  SHERWOOD H J,  JAMES R O;  WO1994024715-A1   ;  WO1997016862-A1   ;  US2004054057-A1 -- US4129543-A   HI-TECH IND INC (HITE-Non-standard)   KAPLAN N;  US4183843-A   ALUMINUM CO OF AMERICA (ALUM)   KOENIG J J,  HSIEH P;  US5047308-A   FUJI PHOTO FILM CO LTD (FUJF)   USAMI T;  US5108832-A   PPG IND INC (PITT)   NUGENT R M,  WARD T A,  GREIGGER P P,  SEINER J A;  US5279910-A   JAPAN ATOMIC ENERGY RES INST (JAAT);  YUASA CORP (YUAS)   IZUTI S,  NODA T,  TAKEDA K,  SASAKI T,  ISHIGAKI I;  US5674437-A   GLOTEX CORP (GLOT-Non-standard)   GEISEL R H;  US5681669-A   UBE IND LTD (UBEI)   YOSHIO M,  NAKAMURA H,  YOSHITAKE H,  TANAKA H;  US6258471-B1   EASTMAN KODAK CO (EAST)   VERDONE J A,  SHERWOOD H J,  JAMES R O