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
Nippon Steel Corp
Original Assignee
Shinagawa Refractories Co Ltd
Sumitomo Metal 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 Shinagawa Refractories Co Ltd, Sumitomo Metal Industries LtdfiledCriticalShinagawa Refractories Co Ltd
Priority to JP9052178ApriorityCriticalpatent/JPS5538401A/en
Publication of JPS5538401ApublicationCriticalpatent/JPS5538401A/en
Publication of JPS577352B2publicationCriticalpatent/JPS577352B2/ja