Ex parte DURAND et al. - Page 11


            Appeal No. 96-3486                                                        
            Application No. 08/291,565                                                




            All the evidence of nonobviousness must be carefully                      
            weighed in deciding whether a prima facie case of                         
            obviousness has been overcome.                                            
                 The Declaration5 under 37 CFR § 1.132 (Paper No. 19,                 
            filed February 23, 1996) seeks to distinguish the claimed                 
            invention over the prior art on two grounds:                              
                 a)  as demonstrated in Experiment I, the use of                      
                    Brunelle’s pseudo-boehmite instead of a                           
                    crystalline alumina yields a catalyst with                        
                    inferior efficiency toward reducing carbon                        
                    monoxide pollutants; and                                          
                 b)  as demonstrated in Experiment II, the pollutant-                 
                    conversion performance of a catalyst possessing a                 
                    coating made from an atomized suspension of cerium                
                    nitrate and gamma-type alumina, followed by ferric                
                    nitrate impregnation, as suggested by Koberstein,                 
                    is less effective than one prepared in accordance                 
                    with the claimed methods; that is, when the iron                  
                    compound is incorporated along with the cerium                    
                    salt and crystalline alumina oxide into the                       
                    aqueous suspension that is subsequently atomized.                 

                                                                                                                                                                  
            would have been characterized as strong or weak, the                      
            examiner must consider all of the evidence anew.” In re                   
            Piasecki, 745 F.2d 1468, 1742-73, 223 USPQ 785, 788 (Fed.                 
            Cir. 1984).                                                               
            5  This refers to the second declaration. Due to an                       
            apparent copying error, the first declaration was filed                   
            (Paper No. 16, filed January 16, 1996) absent results for                 
            Experiment I. Examiner’s response (Advisory Action, Paper                 
            No. 17, mailed February 5, 1996) to this Declaration was                  
            based on incomplete information.                                          
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