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Priority claimed from JP63277717Aexternal-prioritypatent/JP2509989B2/ja
Priority claimed from JP63285476Aexternal-prioritypatent/JPH0813253B2/ja
Application filed by Yoshie Kurihara, Asahi Denka Kogyo KkfiledCriticalYoshie Kurihara
Priority claimed from EP89111180Aexternal-prioritypatent/EP0351567B1/de
Application grantedgrantedCritical
Publication of ATE81260T1publicationCriticalpatent/ATE81260T1/de