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
CA908377A
Inventor
Iwata Hiroshi
Teranishi Nobuhide
Hirashima Masaki
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 CA908377ApublicationCriticalpatent/CA908377A/en