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
CA809570A
Inventor
Onoe Keigo
Miyamori Shigeo
Miyasaka Tomofumi
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 Rayon Co Ltd
Original Assignee
Mitsubishi Rayon Co Ltd
Publication date
Application grantedgrantedCritical
Publication of CA809570ApublicationCriticalpatent/CA809570A/en