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 US06/349,891external-prioritypatent/US4406758A/en
Priority claimed from US06/404,689external-prioritypatent/US4431494A/en
Application filed by Dow Chemical CofiledCriticalDow Chemical Co
Priority claimed from EP82111803Aexternal-prioritypatent/EP0086896B1/en
Application grantedgrantedCritical
Publication of ATE30604T1publicationCriticalpatent/ATE30604T1/en