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Priority claimed from JP61044185Aexternal-prioritypatent/JPS62203657A/en
Priority claimed from JP4418686Aexternal-prioritypatent/JPS62203658A/en
Application filed by Ube IndustriesfiledCriticalUbe Industries
Priority claimed from EP87301776Aexternal-prioritypatent/EP0236097B1/en
Application grantedgrantedCritical
Publication of ATE53314T1publicationCriticalpatent/ATE53314T1/en