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.)
Akzona Inc
Original Assignee
Akzona Inc
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 US05/693,249external-prioritypatent/US4049805A/en
Application filed by Akzona IncfiledCriticalAkzona Inc
Priority to CA333,137ApriorityCriticalpatent/CA1084840A/fr
Application grantedgrantedCritical
Publication of CA1077924ApublicationCriticalpatent/CA1077924A/fr