Legal status (The legal status 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 status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Chemical Corp
Hitachi Ltd
Original Assignee
Hitachi Ltd
Mitsubishi Chemical Industries Ltd
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
Application filed by Hitachi Ltd, Mitsubishi Chemical Industries LtdfiledCriticalHitachi Ltd
Priority to JP4814483ApriorityCriticalpatent/JPS59172549A/ja
Priority to DE8484103132Tprioritypatent/DE3485232D1/de
Priority to EP84103132Aprioritypatent/EP0120463B1/en
Priority to US06/592,255prioritypatent/US4610804A/en
Publication of JPS59172549ApublicationCriticalpatent/JPS59172549A/ja
Publication of JPH0257587B2publicationCriticalpatent/JPH0257587B2/ja