Ex parte SIMPSON - Page 1




                                                       Paper No. 17                   
               THIS OPINION WAS NOT WRITTEN FOR PUBLICATION                           
          The opinion in support of the decision being entered today                  
          (1) was not written for publication in a law journal and                    
          (2) is not binding precedent of the Board.                                  

                      UNITED STATES PATENT AND TRADEMARK OFFICE                       
                                   _______________                                    
                         BEFORE THE BOARD OF PATENT APPEALS                           
                                  AND INTERFERENCES                                   
                                   _______________                                    
                             Ex parte MATTHEW A. SIMPSON                              
                                   ______________                                     
                                 Appeal No. 96-2535                                   
                              Application 08/028,4731                                 
                                   _______________                                    
                                   ON BRIEF                                           
                                   _______________                                    
          Before COHEN, PATE, CRAWFORD, Administrative Patent Judges.                 
          PATE, Administrative Patent Judge.                                          
                                                                                     
                                 DECISION ON APPEAL                                   
               This is an appeal from the final rejection of claims 1                 
          through 20.  These are the only claims in the application.                  
               The claimed invention is directed to a mechanical seal                 
          with a wear layer composed of a polycrystalline diamond film                
          coating.  The diamond coating has two layers with the top                   


               Application for patent filed March 9, 1993.1                                                                     
                                          1                                           





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