WO2009119497-A1 -- JP2006107967-A   TOYOTA CHUO KENKYUSHO KK (TOYW);  TOYOTA JIDOSHA KK (TOYT)   MIURA F,  TAKESHITA T,  TOYODA E,  MORIMOTO Y,  KOBAYASHI M,  KATO M,  KIMURA K;  JP2007257888-A   TOKYO TUNGSTEN KK (TOLT)   OOTA K,  MITSUSHIMA S,  ISHIHARA A,  YAMAMOTO Y,  FUDO T;  JP2008108594-A   UNIV YOKOHAMA NAT (UYYO-Non-standard);  TOKYO TUNGSTEN KK (TOLT)   OOTA K,  KAMIYA N,  MITSUSHIMA S,  SHIBATA Y,  ISHIHARA A,  YAMAMOTO Y,  FUDO T,  KIM J H,  KIN S;  JP11512393-T   EXXON RES & ENG CO (ESSO)   HANTZER S,  TOUVELLE M S,  CHEN J C;  JP11512393-W   EXXON RES & ENG CO (ESSO)   HANTZER S,  TOUVELLE M S,  CHEN J C;  WO2009031383-A1   SHOWA DENKO KK (SHOW)   KONUMA H,  KUROZUMI T,  MONDEN R,  SHISHIKURA T;  JP2003342058-A   SUMITOMO SPECIAL METALS CO LTD (SUMS);  NIPPON TUNGSTEN KK (NIUB)   TSUJIMOTO S,  HIROOKA T,  AJITOMI S;  JP2007031781-A   UNIV YOKOHAMA NAT (UYYO-Non-standard)   KIM J H,  OOTA K,  KAMIYA N,  MITSUSHIMA S,  DOI S,  ISHIHARA A;  JP2008504957-A   UNIV HONG KONG SCI & TECHNOLOGY (UYHK-Non-standard)   YEUNG K L,  YAO N,  HO K Y;  US2011053049-A1 -- US20040204504-A1   ;  US20070292744-A1   ;  US20080145744-A1   ;  US20090130502-A1   ;  US8496903-B2   SHOWA DENKO KK (SHOW)   MONDEN R,  KUROZUMI T,  SHISHIKURA T;  KR1249194-B1 -- JP11512393-A   EXXON RES & ENG CO (ESSO)   HANTZER S,  TOUVELLE M S,  CHEN J C;  JP2006107967-A   TOYOTA CHUO KENKYUSHO KK (TOYW);  TOYOTA JIDOSHA KK (TOYT)   MIURA F,  TAKESHITA T,  TOYODA E,  MORIMOTO Y,  KOBAYASHI M,  KATO M,  KIMURA K;  JP2007257888-A   TOKYO TUNGSTEN KK (TOLT)   OOTA K,  MITSUSHIMA S,  ISHIHARA A,  YAMAMOTO Y,  FUDO T;  JP11512393-W   EXXON RES & ENG CO (ESSO)   HANTZER S,  TOUVELLE M S,  CHEN J C;  CN101978538-B -- JP2001118591-A   TOYOTA CHUO KENKYUSHO KK (TOYW)   MORIMOTO T,  TANIGUCHI T,  KAWAKADO M;  JP2006107967-A   TOYOTA CHUO KENKYUSHO KK (TOYW);  TOYOTA JIDOSHA KK (TOYT)   MIURA F,  TAKESHITA T,  TOYODA E,  MORIMOTO Y,  KOBAYASHI M,  KATO M,  KIMURA K;  US4012303-A   HOOKER CHEM & PLASTICS CORP (HOOK);  RAI RES CORP (RAIR-Non-standard);  JP5419864-B2 -- JP2006107967-A   TOYOTA CHUO KENKYUSHO KK (TOYW);  TOYOTA JIDOSHA KK (TOYT)   MIURA F,  TAKESHITA T,  TOYODA E,  MORIMOTO Y,  KOBAYASHI M,  KATO M,  KIMURA K;  JP2007257888-A   TOKYO TUNGSTEN KK (TOLT)   OOTA K,  MITSUSHIMA S,  ISHIHARA A,  YAMAMOTO Y,  FUDO T;  JP2008108594-A   UNIV YOKOHAMA NAT (UYYO-Non-standard);  TOKYO TUNGSTEN KK (TOLT)   OOTA K,  KAMIYA N,  MITSUSHIMA S,  SHIBATA Y,  ISHIHARA A,  YAMAMOTO Y,  FUDO T,  KIM J H,  KIN S;  JP99512393-W   ;  WO2009091047-A1   SHOWA DENKO KK (SHOW)   MONDEN R,  KUROZUMI T,  SHISHIKURA T;  US9139450-B2 -- JP2003342058-A   SUMITOMO SPECIAL METALS CO LTD (SUMS);  NIPPON TUNGSTEN KK (NIUB)   TSUJIMOTO S,  HIROOKA T,  AJITOMI S;  JP2006107967-A   TOYOTA CHUO KENKYUSHO KK (TOYW);  TOYOTA JIDOSHA KK (TOYT)   MIURA F,  TAKESHITA T,  TOYODA E,  MORIMOTO Y,  KOBAYASHI M,  KATO M,  KIMURA K;  JP2007031781-A   UNIV YOKOHAMA NAT (UYYO-Non-standard)   KIM J H,  OOTA K,  KAMIYA N,  MITSUSHIMA S,  DOI S,  ISHIHARA A;  JP2007257888-A   TOKYO TUNGSTEN KK (TOLT)   OOTA K,  MITSUSHIMA S,  ISHIHARA A,  YAMAMOTO Y,  FUDO T;  JP2008108594-A   UNIV YOKOHAMA NAT (UYYO-Non-standard);  TOKYO TUNGSTEN KK (TOLT)   OOTA K,  KAMIYA N,  MITSUSHIMA S,  SHIBATA Y,  ISHIHARA A,  YAMAMOTO Y,  FUDO T,  KIM J H,  KIN S;  JP2008504957-A   UNIV HONG KONG SCI & TECHNOLOGY (UYHK-Non-standard)   YEUNG K L,  YAO N,  HO K Y;  JP11512393-W   EXXON RES & ENG CO (ESSO)   HANTZER S,  TOUVELLE M S,  CHEN J C;  US5811624-A   EXXON RES & ENG CO (ESSO)   HANTZER S,  TOUVELLE M S,  CHEN J C;  US20040204504-A1   ;  US20070292744-A1   ;  US20080145744-A1   ;  US20090130502-A1   ;  US20100227253-A1   ;  US7541012-B2   UNIV HONG KONG SCI & TECHNOLOGY (UYHK-Non-standard)   YEUNG K L,  YAO N,  HO K Y;  US8496903-B2   SHOWA DENKO KK (SHOW)   MONDEN R,  KUROZUMI T,  SHISHIKURA T;  WO2009031383-A1   SHOWA DENKO KK (SHOW)   KONUMA H,  KUROZUMI T,  MONDEN R,  SHISHIKURA T;  WO2009091047-A1   SHOWA DENKO KK (SHOW)   MONDEN R,  KUROZUMI T,  SHISHIKURA T