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.)
Expired
Application number
CA886504A
Inventor
Nakazawa Susumu
Muraki Junjiro
Kanazawa Shogo
Sakai Toshikazu
Tanabe Koji
Hotta Tomomichi
Nakashima Akira
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Publication date
Application grantedgrantedCritical
Publication of CA886504ApublicationCriticalpatent/CA886504A/en