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
CA834736A
Inventor
Miyamoto Ken
Takahashi Yoshiya
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.)
Tokyo Tanabe Co Ltd
Original Assignee
Tokyo Tanabe Co Ltd
Publication date
Application grantedgrantedCritical
Publication of CA834736ApublicationCriticalpatent/CA834736A/en