Ex Parte Elter et al - Page 5



                 Appeal 2006-2522                                                                                      
                 Application 10/279,632                                                                                

                        Appellants separately argue claims 4 and 7 which recite ranges for the                         
                 amount of one of the catalysts and the second catalyst, respectively.                                 
                 However, we agree with the Examiner that it would have been a matter of                               
                 prima facie obviousness for one of ordinary skill in the art to determine the                         
                 optimum amount for each catalyst.   In re Boesch, 617 F.2d 272, 276,                                  
                 205 USPQ 215, 219 (CCPA 1980).  Also, Appellants have not refuted the                                 
                 Examiner’s factual finding that “it is well known in the art that the efficiency                      
                 of oxidant reduction in the cathode is determined by the amounts of                                   
                 platinum black (carbon supported platinum) in the electrode.  See                                     
                 Mazzucchelli et al. (U.S. 7[sic,6],737,183 B1); Column 1, Lines 48-67”                                
                 (Answer 7, third paragraph).                                                                          
                        In conclusion, based on the foregoing and the reasons well-stated by                           
                 the Examiner, the Examiner’s decision rejecting the appealed claims is                                
                 affirmed.                                                                                             
                        No time period for taking any subsequent action in connection with                             
                 this appeal may be extended under 37 CFR § 1.136(a)(1)(iv) (2004).                                    
                                                    AFFIRMED                                                           



                 clj                                                                                                   
                 Fish & Richardson P.C.                                                                                
                 P.O. Box 1022                                                                                         
                 Minneapolis, MN  55440-1022                                                                           

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