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.)
Shin-Etsu Chemical Co Ltd
Toyobo Co Ltd
Original Assignee
Shin-Etsu Chemical Co Ltd
Toyobo 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 Shin-Etsu Chemical Co Ltd, Toyobo Co LtdfiledCriticalShin-Etsu Chemical Co Ltd
Priority to JP56023760ApriorityCriticalpatent/JPS57139351A/ja
Publication of JPS57139351ApublicationCriticalpatent/JPS57139351A/ja
Publication of JPS6157789B2publicationCriticalpatent/JPS6157789B2/ja