Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP18183380Aexternal-prioritypatent/JPS57106859A/en
Priority claimed from JP18508880Aexternal-prioritypatent/JPS57110960A/en
Application filed by Asahi Chemical IndfiledCriticalAsahi Chemical Ind
Priority claimed from EP81110738Aexternal-prioritypatent/EP0054969B1/en
Application grantedgrantedCritical
Publication of ATE27406T1publicationCriticalpatent/ATE27406T1/en