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
CA752471A
Inventor
Shimizu Izumi
Adachi Tomio
Yamada Shinji
Kyooka Hajime
Abe Isamu
Hirako Ryo
Matsuda Kichiro
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.)
Teijin Ltd
Original Assignee
Teijin Ltd
Publication date
Application grantedgrantedCritical
Publication of CA752471ApublicationCriticalpatent/CA752471A/en