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.)
T Hasegawa Co Ltd
Mitsui Petrochemical Industries Ltd
Original Assignee
T Hasegawa Co Ltd
Mitsui Petrochemical Industries 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 T Hasegawa Co Ltd, Mitsui Petrochemical Industries LtdfiledCriticalT Hasegawa Co Ltd
Priority to JP6099677ApriorityCriticalpatent/JPS53147052A/ja
Publication of JPS53147052ApublicationCriticalpatent/JPS53147052A/ja