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
CA191,675A
Inventor
Victor F. Jenkins
Michael J. Beeken
Stephen Pennington
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 LIL Ltd
Original Assignee
Laporte Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Laporte Industries LtdfiledCriticalLaporte Industries Ltd
Priority to CA191,675ApriorityCriticalpatent/CA1003148A/en
Application grantedgrantedCritical
Publication of CA1003148ApublicationCriticalpatent/CA1003148A/en