Description  Claims  Cited references 

US4529596A   [0004] 
EP099802A   [0004] 
US4847265A   [0005]  [0006]  [0011] 
EP0281459A   [0005] 
EP1310245A   [0006] 
WO2004072085A   [0007] 
EP1900358A   [0008] 
FR2792836A   [0008] 
JP2002234832A   [0008] 
EP1161956A   [0008]