Ex parte SAMEER H. ELDIN et al. - Page 4




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


           112 as failing to provide an adequate written description of               


          the invention.  We reverse this rejection.                                   
                    The specification at page 6 identifies examples of                 
          graft polymers as methacrylate/butadiene/styrene, acrylate/                  
          methacrylate/butadiene/styrene or acrylonitrile/butadiene/styrene            
          polymers.                                                                    
                    The examiner takes the position that one of ordinary               
          skill in the art cannot prepare, from this noted disclosure,                 
          graft polymers in the absence of an identification of the polymer            
          backbone and the monomers grafted thereon.  We cannot agree with             
          the examiner's position.                                                     
                    The last named polymer, acrylonitrile/butadiene/styrene            
          is better known as an ABS resin.  An ABS resin  by definition is4                             
          a true graft polymer consisting of an elastomeric polybutadiene              
          or rubber phase, grafted with styrene and acrylonitrile monomers             
          for compatibility, dispersed in a rigid styrene-acrylonitrile                
          (SAN) matrix.  The other named examples also include butadiene               
          and styrene in combination with an acryl monomer.  In our view,              
          one of ordinary skill in this art would clearly know that the                


            See The Condensed Chemical Dictionary, Ninth Ed., page 2,4                                                                       
          1977 (copy enclosed).                                                        
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