Ex parte KHAN et al. - Page 6




          Appeal No. 1997-0926                                                        
          Application No. 08/552,045                                                  


          disclosure as a blueprint to reconstruct the claimed invention              
          from the isolated teachings of the prior art.  See, e.g.,                   
          Grain Processing Corp. v. American Maize-Products Co., 840                  
          F.2d 902, 907, 5 USPQ2d 1788, 1792 (Fed. Cir. 1988).                        

                  The Rejection of Claims 1-3 Under 35 U.S.C. § 103                   
                          Over Yoshida in view of Valentine                           
               Claim 1 recites a medical device coated with a mixture of              
          a silicone based lubricant and either vitamin E or vitamin E                
          acetate.                                                                    
               Yoshida teaches a medical bag, such as a blood bag,                    
          comprising a pair of heat-sealable thermoplastic plastic                    
          sheets (e.g., polyvinyl chloride, polyolefin such as                        
          polyethylene, an ethylene-vinyl acetate copolymer or the like)              
          (col. 4, lines 60-68) with polyvinyl chloride being the                     
          preferred material (col. 2, lines 12, 13).  In order to                     
          prevent blood platelets from                                                


          adhering to the plastic sheets and the sheets from adhering to              
          each other, the plastic sheets forming the sides of the bag                 
          are coated with a solution of a silicone resin composition                  
          containing dimethylsiloxane and an aminosilane coupling agent               
                                          6                                           





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