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
CA865213A
Inventor
Tanaka Kenjiro
Konuma Hideo
Ono Katsuhiro
Nishimura Toshihide
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.)
Idemitsu Kosan Co Ltd
Original Assignee
Idemitsu Kosan Co Ltd
Publication date
Application grantedgrantedCritical
Publication of CA865213ApublicationCriticalpatent/CA865213A/en