Ex parte ROSS, JR., et al. - Page 2




          Appeal No. 96-0037                                                          
          Application 08/237,224                                                      


               The appellants' invention is directed to a process for                 
          separating fluidized cracking catalyst solids from hydrocarbon              
          vapors.  The subject matter before us on appeal is illustrated by           
          reference to claim 15, which reads as follows:                              
               15. A process for separating fluidized cracking catalyst               
          solids from hydrocarbon vapors comprising:                                  
               (a) feeding a mixture of fluidized cracking catalyst solids            
          and hydrocarbon vapors from a riser reactor into a separator                
          having at least one semi-circular separating area;                          
               (b) deflecting the mixture off of a deflecting means in the            
          separator into said at least one semi-circular separating area;             
               (c) separating said mixture by inertial separation in said             
          at least one semi-circular separating area into a hydrocarbon               
          vapor product stream and a fluidized cracking catalyst stream;              
               (d) withdrawing said hydrocarbon vapor product stream from             
          said at least one semi-circular separating area through a                   
          horizontally upwardly disposed opening on the side of a                     
          horizontally disposed gas outlet which extends through said at              
          least one separating area and parallel to said deflector in said            
          at least one semi-circular separating area; and                             
               (e) withdrawing the fluidized cracking catalyst from said              
          at least one semi-circular separating area.                                 

                                    THE REFERENCE                                     
               The sole reference relied upon by the examiner to support              
          the final rejection is:                                                     
          Barnes                   4,666,674                May 19, 1987              



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