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
CA752829A
Inventor
Yamamoto Takashi
Kobayashi Shuichi
Ueda Hideo
Kondo Mamoru
Nakatomi Kentaro
Takahashi Saburo
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.)
Hokko Chemical Industry Co Ltd
Original Assignee
Hokko Chemical Industry Co Ltd
Publication date
Application grantedgrantedCritical
Publication of CA752829ApublicationCriticalpatent/CA752829A/en