申请人 |
MITSUI PETROCHEMICAL INDUSTRIES, LTD., TOKIO/TOKYO |
发明人 |
WAMURA, HIROO C/O MITSUI PETR. IND. LIMITED, WAKI-CHO KUGA-GUN YAMAGUCHI;UESUGI, SHUNYO C/O MITSUI PETR. IND. LIMITE, WAKI-CHO KUGA-GUN YAMAGUCHI;HAYASHI, TAKASI C/O MITSUI PETR. IND. LIMITED, WAKI-CHO KUGA-GUN YAMAGUCHI |