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
CA661367A
Inventor
Shinohara Yoshiyuki
Tomioka Tatsuo
Suzuki Masaomi
Mihara Yoshiaki
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.)
Nikken Chemicals Co Ltd
Original Assignee
Nikken Chemicals Co Ltd
Publication date
Application grantedgrantedCritical
Publication of CA661367ApublicationCriticalpatent/CA661367A/en