Description     Claims     Drawing  

WO2005071012A   [0004] 
WO2007089598A   [0005] 
US7786246B   [0047] 
US4217438A   [0050] 
US3635895A   [0056] 
US4001184A   [0056] 
US4154775A   [0159] 

CHEMICAL ABSTRACTS   [0028]