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
CA915464A
Inventor
Aizawa Kensuke
Kato Mahiko
Saito 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.)
Tokico Ltd
Original Assignee
Tokico Ltd
Publication date
Application grantedgrantedCritical
Publication of CA915464ApublicationCriticalpatent/CA915464A/en