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.)
Denka Co Ltd
Nippon Steel Nisshin Co Ltd
Original Assignee
Denki Kagaku Kogyo KK
Nisshin Steel 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 Denki Kagaku Kogyo KK, Nisshin Steel Co LtdfiledCriticalDenki Kagaku Kogyo KK
Priority to JP8719891ApriorityCriticalpatent/JPH0516305A/ja
Publication of JPH0516305ApublicationCriticalpatent/JPH0516305A/ja
Publication of JPH0563309B2publicationCriticalpatent/JPH0563309B2/ja