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
CA220,589A
Inventor
Charles C. Payne
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.)
ChampionX LLC
Original Assignee
Nalco Chemical Co
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
Priority claimed from CA130,443Aexternal-prioritypatent/CA969710A/en
Application filed by Nalco Chemical CofiledCriticalNalco Chemical Co
Priority to CA220,589ApriorityCriticalpatent/CA990154A/en
Application grantedgrantedCritical
Publication of CA990154ApublicationCriticalpatent/CA990154A/en