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
CA855773A
Inventor
Ohira Fukuichi
Shiode Chuji
Matsumura Toshikazu
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.)
JNC Corp
Original Assignee
Chisso Corp
Publication date
Application grantedgrantedCritical
Publication of CA855773ApublicationCriticalpatent/CA855773A/en