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.)
Shell Sekiyu KK
Showa Shell Sekiyu KK
Original Assignee
Shell Sekiyu KK
Showa Shell Sekiyu 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 Shell Sekiyu KK, Showa Shell Sekiyu KKfiledCriticalShell Sekiyu KK
Priority to JP5666382ApriorityCriticalpatent/JPS58174496A/ja
Publication of JPS58174496ApublicationCriticalpatent/JPS58174496A/ja
Publication of JPS6121592B2publicationCriticalpatent/JPS6121592B2/ja