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.)
Tokyo Gas Co Ltd
Resonac Corp
Original Assignee
Hitachi Chemical Co Ltd
Tokyo Gas 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 Ltd, Tokyo Gas Co LtdfiledCriticalHitachi Chemical Co Ltd
Priority to JP58041190ApriorityCriticalpatent/JPS59167647A/ja
Publication of JPS59167647ApublicationCriticalpatent/JPS59167647A/ja
Publication of JPH0554021B2publicationCriticalpatent/JPH0554021B2/ja