Description  Claims  Drawing  Cited references 

EP2505247A1   [0007] 
US2005235622A1   [0007] 
EP1484483A1   [0007] 
CN200610106777   [0022]  [0023] 
CN103104319A   [0030] 

New Asymmetric Plugging Structure of Diesel Particulate Filters for the Pressure Drop Reduction   [0026]  [0027]