申请人 |
THE JAPAN STEEL WORKS, LTD., TOKIO/TOKYO, JP;MITSUI TOATSU CHEMICALS, INC., TOKIO/TOKYO, JP |
发明人 |
HOSOYAMA, HIROSHI, C/O THE JAPAN STEEL WORKS,LTD., AKI-KU, HIROSHIMA-SHI, HIROSHIMA, JP;YAMAMOTO, MICHIAKI, C/O THE JAPAN STEEL WORKS, LTD, AKI-KU, HIROSHIMA-SHI, HIROSHIMA, JP;SUEHIRO, KEIGO, C/O MITSUI TOATSU CHEM. INC., CHIYODA-KU, TOKYO, JP |