Ex parte DUFRESNE et al. - Page 5




          Appeal No. 96-3454                                         Page 5           
          Application No. 08/260,295                                                  

          “two or more materials disclosed by the prior art for the same              
          purpose to form a third material that is to be used for the                 
          same purpose....” (Final rejection, page 3). The examiner                   
          urges that motivation for combining the prior art teachings                 
          “comes from the fact that both                                              


          are directed to the same desulfurization process.”  See page 6              
          of the answer.  We cannot agree with the examiner.                          
               In our view, the examiner’s reliance on the “same                      
          purpose” and “same desulfurization process” as motivation for               
          combining the references is not supported by the applied                    
          references.    In this regard, we note that Seiver teaches                  
          decomposing a catalyst precursor in the presence of a sulfur                
          bearing compound and hydrogen (column 10, lines 35-42) whereas              
          Berrebi discloses loading the catalyst with his disclosed                   
          presulfurizing agent in a process step that is carried out in               
          the absence of hydrogen (column 6, lines 9-15).  In view of                 
          the above and based on the present record, we cannot agree                  
          with the examiner that the dissimilar methods of Seiver and                 
          Berrebi are directed to the “same desulfurization process”                  
          using sulfur containing materials for the “same purpose.”                   








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