Ex parte RONNBERG et al. - Page 13




          Appeal No. 1998-3367                                                        
          Application No. 08/545,717                                                  


                    [citations omitted].  These cases have                            
                    consistently held that in such a situation,                       
                    the appellant must show that the particular                       
                    range is critical, generally be showing                           
                    that the claimed range achieves unexpected                        
                    results relative to the prior art range.                          































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