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 JP58239549Aexternal-prioritypatent/JPS60133368A/ja
Priority claimed from JP9137984Aexternal-prioritypatent/JPS60235060A/ja
Application filed by Daiichi Pure Chemicals Co LtdfiledCriticalDaiichi Pure Chemicals Co Ltd
Priority claimed from EP84115604Aexternal-prioritypatent/EP0149168B1/de
Application grantedgrantedCritical
Publication of ATE63000T1publicationCriticalpatent/ATE63000T1/de