申请人 |
MITSUI MINING & SMELTING CO., LTD., TOKIO/TOKYO, JP |
发明人 |
YOKOTA, TOSHIKI, AGEO-SHI, SAITAMA, JP;DOBASHI, MAKOTO, AGEO-SHI, SAITAMA, JP;HATA, HIROSHI, KAWAGOE-SHI, SAITAMA, JP;SAKAI, HISAO, KITAADACHI-GUN, SAITAMA, JP;TAKAHASHI, SUSUMU, KAWAGOE-SHI, SAITAMA, JP;YOSHIOKA, JUNSHI, AGEO-SHI, SAITAMA, JP |