Ex parte REBHAN et al. - Page 4




                 Appeal No. 95-3233                                                                                                                     
                 Application No. 08/094,477                                                                                                             


                 examiner has failed to set forth objective evidence or                                                                                 
                 compelling reasoning that reasonably establishes that one of                                                                           
                 ordinary skill in the art would be unable to practice the                                                                              
                 claimed invention of feeding into the reaction zone a liquid                                                                           
                 feed comprising propylene and a catalyst precursor at the                                                                              
                 claimed Reynolds number.  Accordingly, in the absence of such                                                                          
                 evidence or reasoning, we are persuaded that one of ordinary                                                                           
                 skill in the art would be able to attain the claimed Reynolds                                                                          
                 number by adjusting the diameter of the feed tube or the                                                                               
                 average velocity of the fluid feed (page 2 of Reply Brief of                                                                           
                 February 17, 1995).                                                                                                                    
                          Appealed claims 10-13 and 3-6 also stand rejected under                                                                       
                 35 U.S.C. § 103 as being unpatentable over Brady alone, Brady                                                                          
                 in view of Kondo or Kondo in view of Brady.3                                                                                           
                          We concur with the examiner that the claimed subject                                                                          
                 matter would have been obvious to one of ordinary skill in the                                                                         
                 art within the meaning of § 103 in view of the collective                                                                              
                 teachings of Brady and Kondo.  Appellants apparently do not                                                                            

                          3Inasmuch as the rejections over the combined teachings                                                                       
                 of Brady and Kondo subsume the rejection over Brady alone, we                                                                          
                 will limit our discussion to the examiner's rejection of the                                                                           
                 appealed claims over the collective teachings of Brady and                                                                             
                 Kondo.                                                                                                                                 
                                                                         -4-                                                                            




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