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.)
Shinagawa Refractories Co Ltd
Shinagawa Shiro Renga KK
Original Assignee
Shinagawa Refractories Co Ltd
Shinagawa Shiro Renga 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 Shinagawa Refractories Co Ltd, Shinagawa Shiro Renga KKfiledCriticalShinagawa Refractories Co Ltd
Priority to JP9020081ApriorityCriticalpatent/JPS57204791A/en
Publication of JPS57204791ApublicationCriticalpatent/JPS57204791A/en
Publication of JPS6346355B2publicationCriticalpatent/JPS6346355B2/ja