Ex parte SAMEER H. ELDIN et al. - Page 9




          Appeal No. 95-5080                                                           
          Application 07/952,122                                                       


          a core-shell polymer (toughener) (column 3, line 53 - column 5,              
          line 10) and a hardener (column 5, lines 11, 58-61, column 6,                



          lines 41-50 and claim 13).  Henton indicates that the hardeners              
          can be selected from Lee.  Lee discloses numerous anhydride                  
          hardeners in combination with amine accelerators useful for                  
          curing epoxy resins.  Henton also indicates that within the                  
          expression “epoxy resin continuous phase” are curing agents,                 
          hardening agents, reactive and inert diluents, and initiators or             
          catalysts.  Henton's catalyst includes amines, e.g. methylene                
          dianiline and triethylene tetramine.  Hence, from the teachings              
          of Henton one of ordinary skill in this art would combine a                  
          liquid epoxy resin, a toughener, an anhydride and amine                      
          accelerator, and an amine catalyst which catalyst satisfies the              
          claimed amine component (d).  Hence, the teachings of Henton and             
          Lee would have been be sufficient to render the instant claims               
          prima facie obvious within the meaning of 35 U.S.C.  103.                   
                    Appellants have relied upon the Eldin declaration to               
          establish unobviousness.  We, like the examiner, have reviewed               
          the evidence of nonobviousness and weighed the same against the              
          evidence of obviousness of record.  In re Johnson,  747 F.2d                 

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