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Priority claimed from JP62031116Aexternal-prioritypatent/JPS63199624A/en
Priority claimed from JP62031115Aexternal-prioritypatent/JPS63199623A/en
Application filed by Idemitsu Petrochemical CofiledCriticalIdemitsu Petrochemical Co
Priority claimed from EP88102082Aexternal-prioritypatent/EP0278519B1/en
Application grantedgrantedCritical
Publication of ATE82902T1publicationCriticalpatent/ATE82902T1/en