Ex parte MANGIAGLI et al. - Page 6




          Appeal No. 95-4927                                                          
          Serial No. 08/216,772                                                       


          results in long internal leads 6 and 7 having an inductance                 
          that detracts from the high-frequency operation of the                      
          semiconductor device (p. 3, lines 19-27).  Mizuguchi solves                 
          both of these problems by forming each of leads 2 and 4 with a              
          pair of 90E bends (9, 10) as shown in Figure 3 so as to reduce              
          the length of the internal leads 6 and 7 and provide bends for              
          inclusion within the resin body in order to increase the                    
          mechanical support for leads 2 and 4 (p. 4, line 19 to p. 5,                
          line 5).                                                                    
               Yasui shows various resin semiconductor housings designed              
          to reduce current leakage between leads and along the surface               
          of the housing during operation in a moist atmosphere (col. 1,              
          lines 39-56; col. 2, lines 1-6).  This is achieved in the                   
          embodiment of Figures 3A and 3B by enclosing a portion of the               
          center lead adjacent to the housing with resin, thereby                     
          creating steps 28 in the housing surface which increase the                 
          surface distance between adjacent leads (col. 3, lines 13-19).              


               Inasmuch as the statement of the rejection does not                    
          appear in the December 23, 1994, final Office action, we look               
          to the preceding Office action, dated June 23, 1994, wherein                
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