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 JP60015109Aexternal-prioritypatent/JPS61172880A/en
Priority claimed from JP60056909Aexternal-prioritypatent/JPS61215393A/en
Application filed by Takeda Chemical Industries LtdfiledCriticalTakeda Chemical Industries Ltd
Priority claimed from EP86300502Aexternal-prioritypatent/EP0191568B1/en
Application grantedgrantedCritical
Publication of ATE47594T1publicationCriticalpatent/ATE47594T1/en