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Priority claimed from JP26262887Aexternal-prioritypatent/JPH0791427B2/en
Priority claimed from JP384388Aexternal-prioritypatent/JP2603671B2/en
Priority claimed from JP63023745Aexternal-prioritypatent/JP2583551B2/en
Application filed by Idemitsu Kosan CofiledCriticalIdemitsu Kosan Co
Priority claimed from EP88117305Aexternal-prioritypatent/EP0312976B1/en
Application grantedgrantedCritical
Publication of ATE100482T1publicationCriticalpatent/ATE100482T1/en