申请人 |
MITSUI PETROCHEMICAL INDUSTRIES, LTD., TOKIO/TOKYO, JP |
发明人 |
HASHIMOTO, ISAO MITSUI PETROCHEMICAL INDUSTRIES, KUGA-GUN YAMAGUCHI-KEN, JP;YOKOYAMA, KEIICHI MITSUI PETROCHEMICAL IND. L, ICHIHARA-SHI CHIBA-KEN, JP;KITAHARA, TAKUMI MITSUI PETROCHEMICAL IND. LT, KUGA-GUN YAMAGUCHI-KEN, JP |