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.)
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.)
National Petro-Chemicals Corp
Original Assignee
National Petro-Chemicals Corp
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Filing date
Publication date
Application filed by National Petro-Chemicals CorpfiledCriticalNational Petro-Chemicals Corp
Priority to CA180,770ApriorityCriticalpatent/CA991902A/en
Priority to CA225,077Aprioritypatent/CA1005271A/en
Application grantedgrantedCritical
Publication of CA991902ApublicationCriticalpatent/CA991902A/en