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Priority claimed from JP22798984Aexternal-prioritypatent/JPS61106648A/ja
Priority claimed from JP22798884Aexternal-prioritypatent/JPS61106245A/ja
Application filed by Mitsui Petrochemical Ind, Shell Oil CofiledCriticalMitsui Petrochemical Ind
Priority claimed from EP85307909Aexternal-prioritypatent/EP0180478B1/de
Application grantedgrantedCritical
Publication of ATE45315T1publicationCriticalpatent/ATE45315T1/de