Ex parte MA et al. - Page 5




          Appeal No. 1997-2344                                                        
          Application No. 08/273,550                                                  

          of obviousness for using a nucleating package composed of a                 
          high melt flow polypropylene and stearamide.  As observed                   
          above, polypropylene and stearamide have been individually                  
          used by prior art workers as nucleating agents for butene-1                 
          polymers.  It is well settled that it is prima facie obvious                
          to combine two components or two compositions each of which is              
          taught by the prior art to be useful for the same purpose to                
          form a third composition which is to be used for the very same              
          purpose.  In re Susi, 440 F.2d 442, 445, 169 USPQ 423, 426                  
          (CCPA 1971).  Applying this principle of law to the                         
          disclosures in Hwo, it would have been prima facie obvious to               
          form a nucleating package composed of both polypropylene and                
          stearamide because each material has been disclosed in the                  
          prior art as individually useful for the very same purpose of               
          promoting the crystallization of thermoplastic butene-1                     
          polymer compositions.  The idea of combining them flows                     
          logically from their having been individually taught in the                 
          prior art.                                                                  
               We recognize, as stressed by appellants, that the herein               
          claimed invention is directed to a nucleating package                       
          comprising a high melt flow polypropylene having a melt flow                

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