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
CA909232A
Inventor
Yamamoto Kenji
Terayama Mutsuo
Sasaki Nobuharu
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.)
Yamamoto Chemicals Inc
Original Assignee
Yamamoto Chemicals Inc
Publication date
Application grantedgrantedCritical
Publication of CA909232ApublicationCriticalpatent/CA909232A/en