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 GB838301677Aexternal-prioritypatent/GB8301677D0/en
Application filed by Ici PlcfiledCriticalIci Plc
Priority claimed from EP83302795Aexternal-prioritypatent/EP0097425B1/en
Application grantedgrantedCritical
Publication of ATE26446T1publicationCriticalpatent/ATE26446T1/en