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
CA881563A
Inventor
Wakabayashi Kenichi
Yamada Minoru
Shide Yoichi
Ito Masashiro
Imai Yoshiharu
Oya Junichi
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.)
Mitsubishi Kasei Corp
Original Assignee
Mitsubishi Kasei Corp
Publication date
Application grantedgrantedCritical
Publication of CA881563ApublicationCriticalpatent/CA881563A/en