Description  Claims  Drawing  Cited references 

US6315815B   [0004] 
US6719492B   [0004] 
US7615104B   [0004] 
US8177884B   [0004]  [0004] 
US7413818B   [0004] 
US7744827B   [0004] 
US7465335B   [0004] 
US8070859B   [0004] 
US8147600B   [0004] 

Energy and Fuels   [0006]