Ex Parte Lehman - Page 5

                 Appeal 2007-0881                                                                                      
                 Application 10/250,972                                                                                

                 coils serves to accelerate the molten material . . . by ‘a U turn agitation similar                   
                 to a rotating magnetic field,’” wherein the “‘coils are placed so as to surround                      
                 the short side’” of the mold causing the molten metal to make a U turn (id.).                         
                 Appellant contends the electromagnetic coils 2c,2e and 2f,2h are “generating                          
                 a traveling magnetic field for rotation of the melt, . . . not a braking force” (id.                  
                 7-8).                                                                                                 
                        We find Narita would have disclosed to one of ordinary skill in this                           
                 art in Fig. 4 an arrangement of two sets of “electromagnetic agitating coils”                         
                 2c,2d,2e and 2f,2g,2h wherein 2d and 2g are set on the rear edge of the                               
                 respective opposite short sides and each set forms a “]-shape” on each side                           
                 of the mold.  In this respect, Narita discloses                                                       
                        [a]s a result, especially the un-solidified melt . . . in the . . .                            
                        [short side] portions is acted on by a high propulsion force so                                
                        that the agitating flow is accelerated. . . . [The] flow of the un-                            
                        solidified metal starts in the portion of coil (2c) . . . [and] as the                         
                        melt flows and enters the magnetic field of coil (2d) . . . the                                
                        flow direction is changed, while it is accelerated.  Then, in the                              
                        portion of coil (2e) while the direction is changed to the                                     
                        direction nearly parallel to the major edge of slab (1), at the                                
                        same flow velocity or at the velocity after acceleration, it flows                             
                        and is pressed to the central side of the major side of slab (1)                               
                        again.  [A]s the flow enters the magnetic field of coil (2f), it                               
                        receives a propulsion force in the direction indicated by the                                  
                        arrow . . . [and] by means of coils (2g) and (2h), the flow makes                              
                        a U-turn on the left [short side] edge portion, while the flow is                              
                        accelerated and it is sent towards the rear-right minor edge                                   
                        portion.  In this way, agitation of the un-solidified melt . . . is                            
                        performed with a U-turn at the two minor edge portions                                         
                        simultaneously . . . .                                                                         
                 McElroy translation 3-4 and Fig. 4; see also Aho translation 1-2 and Fig. 4.                          
                 Narita discloses that “in the minor edge portions, U-turn agitation is                                

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