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.)
TOA SEKIYU KK
Toa Oil Co Ltd
Nippon Steel Eco Tech Corp
Original Assignee
TOA SEKIYU KK
Toa Oil Co Ltd
Nittetsu Kakoki KK
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 TOA SEKIYU KK, Toa Oil Co Ltd, Nittetsu Kakoki KKfiledCriticalTOA SEKIYU KK
Priority to JP53074212ApriorityCriticalpatent/JPS593209B2/ja
Publication of JPS551842ApublicationCriticalpatent/JPS551842A/ja
Publication of JPS593209B2publicationCriticalpatent/JPS593209B2/ja