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
CA905620A
Inventor
Tasaka Shigeo
Nishikawa Isamu
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.)
TOYO PAFUTO Co Ltd
Mitsubishi Petrochemical Co Ltd
Original Assignee
TOYO PAFUTO Co Ltd
Mitsubishi Petrochemical Co Ltd
Publication date
Application grantedgrantedCritical
Publication of CA905620ApublicationCriticalpatent/CA905620A/en