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.)
Showa Denko Materials Co ltd
Original Assignee
Hitachi Chemical 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 Chemical Co LtdfiledCriticalHitachi Chemical Co Ltd
Priority claimed from EP96308612Aexternal-prioritypatent/EP0861864B1/de
Publication of DE69633247D1publicationCriticalpatent/DE69633247D1/de
Application grantedgrantedCritical
Publication of DE69633247T2publicationCriticalpatent/DE69633247T2/de