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
CA816621A
Inventor
R. Logan William
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.)
Evonik LCL Ltd
Original Assignee
William R Logan
Laporte Chemicals Ltd
Publication date
Application grantedgrantedCritical
Publication of CA816621ApublicationCriticalpatent/CA816621A/en