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
CA670148A
Inventor
Yamamoto Ryuichi
Tanaka Hiroyoshi
Takehara Mitsunori
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.)
Shionogi and Co Ltd
Original Assignee
Shionogi and Co Ltd
Publication date
Application grantedgrantedCritical
Publication of CA670148ApublicationCriticalpatent/CA670148A/en