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
CA841639A
Inventor
Hiraoko Hiroyuki
Nagahama Shizuo
Shimada Keizo
Senoo Masao
Okamoto Takehiko
Uchida Moriya
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 CA841639ApublicationCriticalpatent/CA841639A/en