Ex parte KOURTAKIS et al. - Page 2




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


                        consisting of kaolin, bentonite, alpha-alumina, and titania, at a ratio of from about 25 to                       
                        about 75 weight %;                                                                                                
                                (b)  adding the blend to water to yield a slurry of about 10 to about 55 weight                           
                        percent solids;                                                                                                   
                                (c) spray drying the slurry to form microspherical particles comprising a                                 
                        composite of zeolite and binder; and                                                                              
                                (d)  calcining the particles at a temperature of about 500 to 750E C.                                     

                        The references relied on by the examiner are:                                                                     

                        Bergna et al.  (Bergna)                 4,683,334                Jul.   28, 1987                                  
                        Abrams et al.  (Abrams)                          4,814,503               Mar. 21, 1989                            
                        Beck et al.  (Beck)                              5,250,484               Oct.    5, 1993                          

                        THE CONDENSED CHEMICAL DICTIONARY 777 (10th ed., Van Nostrand Reinhold                                            
                Company, New York 1981).                                                                                                  
                        The references relied on by appellants in their brief (page 8)  are:1                                                

                        Bemrose et al. (Bemrose), “A Review of Attrition and Attrition Test Methods,” 49 Powder                           
                Technology 97-126 (1987).                                                                                                 

                        Contractor et al.  (Contractor), “Attrition Resistant Catalysts for Fluidized Bed Systems,” in                    
                Engineering Foundation, New York, 589-596 (1989).                                                                         

                        C. Satterfield, HETEROGENOUS CATALYSIS IN INDUSTRIAL PRACTICE 89-93 (2nd                                          
                edition, McGraw-Hill, New York 1991).                                                                                     

                        Claims 7, 8, 11 and 14 stand rejected under 35 U.S.C.  103 as being unpatentable over                            

                Bergna in view of Abrams or Beck.  Claims 9 and 10 stand rejected under 35 U.S.C.  103 as being                          



                        1These three references were originally submitted as an attachment to the amendment filed October 10, 1995        
                (Paper No. 7) “to illustrate that it is possible for a catalyst composition to be attrition resistant but not crush       
                resistant, or vis versa” (page 8, first full paragraph).                                                                  
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