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
CA869006A
Inventor
Kuga Mutsuo
Kayama Hiroshi
Matsumura Wakuo
Mashimo Takeshi
Yamada Noboru
Sakuratani Yoshiro
Saito Yoshimasa
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 Rayon Co Ltd
Original Assignee
Nippon Rayon Co Ltd
Publication date
Application grantedgrantedCritical
Publication of CA869006ApublicationCriticalpatent/CA869006A/en