申请人 |
NIPPON STEEL CORP., TOKIO/TOKYO, JP |
发明人 |
NISHIDA, SEIKI, NIPPON STEEL CORPORATION, CHIBA 299-11, JP;OCHIAI, IKUO, NIPPON STEEL CORPORATION, CHIBA 299-11, JP;OBA, HIROSHI, NIPPON STEEL CORPORATION, CHIBA 299-11, JP;SERIKAWA, OSAMI, NIPPON STEETL CORPORATION, CHIBA 299-11, JP |