申请人 |
NIPPON STEEL CORP., TOKIO/TOKYO, JP;NIPPON STEEL CHEMICAL CO., LTD., TOKIO/TOKYO, JP |
发明人 |
KIMURA, HIROMI, NIPPON STEEL CORPORATION, NAKAHARA-KU, KAWASAKI-SHI, KANAGAWA 211, JP;YAMADA, KANJI, NIPPON STEEL CORPORATION, NAKAHARA-KU, KAWASAKI-SHI, KANAGAWA 211, JP;HIRATO, YASUHIRO, NIPPON STEEL CORPORATION, NAKAHARA-KU, KAWASAKI-SHI, KANAGAWA 211, JP |