申请人 |
SUMITOMO METAL MINING CO. LTD., TOKIO/TOKYO, JP |
发明人 |
MITARAI, YUKUAKI, KAMAGAYA CITY CHIBA PREFECTURE, JP;KINBARA, NAOTO, ICHIKAWA CITY CHIBA PREFECTURE, JP;TAKAHASHI, YASUHITO, NARASHINO CITY CHIBA PREFECTURE, JP;KAWAGUCHI, TOMIO, FUNABASHI CITY CHIBA PREFECTURE, JP;SAKAI, SHIGERU, ICHIKAWA CITY CHIBA PREFECTURE, JP |