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.)
Tosoh Corp
Original Assignee
Tosoh Corp
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 Tosoh CorpfiledCriticalTosoh Corp
Priority to JP4061083ApriorityCriticalpatent/JPS59167565A/ja
Publication of JPS59167565ApublicationCriticalpatent/JPS59167565A/ja
Publication of JPS6347704B2publicationCriticalpatent/JPS6347704B2/ja