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
CA900990A
Inventor
Tani Hideo
Nagakura Masahiko
Mizutani Takashi
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.)
Kowa Co Ltd
Original Assignee
Kowa Co Ltd
Publication date
Application grantedgrantedCritical
Publication of CA900990ApublicationCriticalpatent/CA900990A/en