Ex parte KOURTAKIS et al. - Page 5

                Appeal No. 1996-3674                                                                                                      
                Application No. 08/451,826                                                                                                

                        Beck discloses combining acidic porous crystalline materials with matrix materials, e.g., clays,                  

                silica and/or metal oxides, which are resistant to temperature and other conditions employed in organic                   

                conversion processes (col. 4, lines 36-42).  Zeolites are frequently combined                                             

                with clays, e.g., bentonite and kaolin, which function, in part, as a binder (col. 4, lines 52-56).  Porous               

                matrix materials, e.g., silica, alumina, zirconia, titania, silica-alumina, silica-magnesia, silica-thoria, silica-       

                berylia, silica-titania, silica-alumina-zirconia, silica-alumina-magnesia, and silica-magnesia-zircona, can               

                also be used (col. 5, lines 3-10).  Silica is preferred because of its relative inertness for acid-catalyzed              

                reactions (col. 5, lines 13- 16).  The relative proportions of the acidic porous crystalline material and                 

                inorganic oxide matrix material may vary widely, with the acidic porous crystalline material content                      

                ranging from about 1 to about 90 weight %, preferably from about 2 to about 50 weight % of the                            

                composite  (col. 5, lines 16-21).                                                                                         

                        THE CONDENSED CHEMICAL DICTIONARY discloses that the smaller the particle, the                                    

                greater the total exposed surface area of a given volume; therefore, since activity is a direct function of               

                surface area, the smaller a particle is the more efficiently it will react both chemically and physically.                

                        According to the examiner, Bergna “does not teach the amounts of materials as claimed and                         

                calcination temperatures as claimed, the spray drying as claimed, or the use of the specific binders                      

                claimed” (answer, page 3) “the particle sizes claimed” (answer, page 6).  However, given that “Abrams                     

                et al. teach that the calcination temperature is an adjustable process parameter” and that “Beck et al.                   

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