Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP15320684Aexternal-prioritypatent/JPS6132737A/ja
Priority claimed from JP15552084Aexternal-prioritypatent/JPS6135226A/ja
Application filed by Idemitsu Petrochemical CofiledCriticalIdemitsu Petrochemical Co
Priority claimed from EP85304982Aexternal-prioritypatent/EP0176177B1/de
Application grantedgrantedCritical
Publication of ATE46476T1publicationCriticalpatent/ATE46476T1/de