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
CA834257A
Inventor
Miyamoto Keiichi
Kenmotsu Takeji
Takei Koji
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.)
Arakawa Rinsan Kagaku Kogyo KK
Mitsui Petrochemical Industries Ltd
Original Assignee
Arakawa Rinsan Kagaku Kogyo KK
Mitsui Petrochemical Industries Ltd
Publication date
Application grantedgrantedCritical
Publication of CA834257ApublicationCriticalpatent/CA834257A/en