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.)
Pactiv LLC
Original Assignee
Mobil Oil Corp
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 US06/297,523external-prioritypatent/US4419087A/en
Priority claimed from CA000488275Aexternal-prioritypatent/CA1221341A/fr
Application filed by Mobil Oil CorpfiledCriticalMobil Oil Corp
Priority to CA000530162ApriorityCriticalpatent/CA1233486A/fr
Application grantedgrantedCritical
Publication of CA1233486ApublicationCriticalpatent/CA1233486A/fr