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.)
Riken Corp
Resonac Holdings Corp
Original Assignee
Riken Corp
Showa Denko KK
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 Riken Corp, Showa Denko KKfiledCriticalRiken Corp
Priority to JP28226387ApriorityCriticalpatent/JPS63266004A/ja
Publication of JPS63266004ApublicationCriticalpatent/JPS63266004A/ja
Publication of JPH0256401B2publicationCriticalpatent/JPH0256401B2/ja