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.)
Showa Shell Sekiyu KK
Original Assignee
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 Showa Shell Sekiyu KKfiledCriticalShowa Shell Sekiyu KK
Priority to JP19903482ApriorityCriticalpatent/JPS5989398A/ja
Priority to DE8383200784Tprioritypatent/DE3373313D1/de
Priority to EP83200784Aprioritypatent/EP0096919B1/en
Publication of JPS5989398ApublicationCriticalpatent/JPS5989398A/ja
Publication of JPH0332595B2publicationCriticalpatent/JPH0332595B2/ja