Ex parte BLUM et al. - Page 5

          Appeal No. 1997-0058                                                        
          Application No. 08/300,399                                                  

          portion of the current spike above the meaningful part of the               
          curve is eliminated, such that the slew rate or slope of that               
          portion becomes low.  However, the portion of the current                   
          spike below the meaningful part of the sense signal curve of                
          Figure 2 remains unchanged with the same high slope as the                  
          original current spike.  Thus, White does not prevent the                   
          slope of the current sense signal from exceeding a maximum                  
          slew rate, since a portion of the signal remains at a high                  
          slew rate.  Accordingly, White fails to meet every limitation               
          of the claim, and we cannot sustain the anticipation rejection              
          of claim 6.                                                                 
               For claims 2, 5, 13, 16, and 17, the examiner attempts                 
          (Answer, page 4) to combine Kusano with White.  The examiner                
          states (Answer, page 5) that it would have been obvious to                  
          replace White's filter with the transconductance amplifier in               
          Kusano's Figure 2 "because active filters that utilize a                    
          feedback technique are preferred when fabricating integrated                
          circuits because of the difficulty in constructing inductance               
               As asserted by appellants (Brief, page 12), there is no                
          teaching or suggestion in the art to combine White and Kusano               

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