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.)
Hitachi Ltd
Eneos Corp
Original Assignee
Hitachi Ltd
Nippon Mining Co 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, Nippon Mining Co LtdfiledCriticalHitachi Ltd
Priority to JP9223477ApriorityCriticalpatent/JPS5829356B2/ja
Publication of JPS5426805ApublicationCriticalpatent/JPS5426805A/ja
Publication of JPS5829356B2publicationCriticalpatent/JPS5829356B2/ja