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 US06/508,668external-prioritypatent/US4522776A/en
Application filed by Union Carbide CorpfiledCriticalUnion Carbide Corp
Priority claimed from EP84107411Aexternal-prioritypatent/EP0133213B1/de
Application grantedgrantedCritical
Publication of ATE50190T1publicationCriticalpatent/ATE50190T1/de