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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and 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 US05/808,994external-prioritypatent/US4144618A/en
Application filed by EI Du Pont de Nemours and CofiledCriticalEI Du Pont de Nemours and Co
Application grantedgrantedCritical
Publication of CA1116207ApublicationCriticalpatent/CA1116207A/fr