Ex Parte KITAKAMI et al - Page 9




          Appeal No. 1998-1658                                                        
          Application 08/343,876                                                      

          magnetic flux density material on the leading gap edge as recited           
          in claims 1 and 8.  Accordingly, the rejection of claims 7 and 14           
          is reversed.                                                                


          Issue (3):  Claims 1, 4-6, 8, and 11-13                                     
                    Shimizu '178 and Shimizu '645                                     
               The contents of Shimizu '178 are discussed under Issue (1).            
               Shimizu '645, figure 1, discloses a MIG head having magnetic           
          core halves 11a and 11b of Mn-Zn ferrite with first ferromagnetic           
          metal thin films 13a and 13b of high saturation flux density                
          material, such as Fe-Si-AD, on the core halves opposing each                
          other to form the gap 12 and second ferromagnetic metal thin                
          films 17a and 17b, such as Fe-Si-A D alloy of different                     
          composition, on the first ferromagnetic metal thin films 13a and            
          13b (col. 4, lines 20-44).  The first ferromagnetic metal thin              
          film may be sendust (col. 8, lines 49-53).  The ratio B S2/BS1 of           
          the saturation flux density B S2 of the second ferromagnetic thin           
          films 17a and 17b to the saturation flux density B S1 of the first          
          ferromagnetic metal thin films 13a and 13b should be less than              
          0.6 (col. 2, lines 59-61; col. 5, lines 16-26 and 45-48; col. 7,            
          lines 10-18).  Shimizu '645 discloses that the first and second             
          ferromagnetic metal thin films 13a and 17a may be formed on only            
          one magnetic core half 11a, as shown in figure 8 (col. 8,                   
          lines 16-21).  Shimizu '645 does not disclose the direction of              

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