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
CA839348A
Inventor
Ohzeki Takao
Honda Masakazu
Yamamoto Tsuzuku
Ichikawa Akira
Senda Kazuo
Sasaki Minoru
Masunaka Shigenobu
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 CA839348ApublicationCriticalpatent/CA839348A/en