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 FR8802827Aexternal-prioritypatent/FR2628102B1/en
Priority claimed from FR8810536Aexternal-prioritypatent/FR2634760B1/en
Application filed by Rhone Poulenc ChimiefiledCriticalRhone Poulenc Chimie
Priority claimed from EP89420077Aexternal-prioritypatent/EP0331593B1/en
Application grantedgrantedCritical
Publication of ATE82743T1publicationCriticalpatent/ATE82743T1/en