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
CA902397A
Inventor
Noda Ikuya
Ueta Takashi
Minami Hisao
Sudo Koichi
Someno Fujio
Yamamoto Akira
Hirano Ryo
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
Fujio Someno
Hisao Minami
Ikuya Noda
Koichi Sudo
Takashi Ueta
Nippon Steel Corp
Publication date
Application grantedgrantedCritical
Publication of CA902397ApublicationCriticalpatent/CA902397A/en