Ex parte AZUMA et al. - Page 9




               Appeal No. 1999-2712                                                                       Page 9                    
               Application No. 08/165,082                                                                                           


               . We typically observed these problems in any devices that are annealed at temperatures greater than                 

               900EC.”  The examiner responds by asserting (answer, page 9) that the example in the Joshi                           

               Declaration “does not include the adhesion layer disclosed as necessary in the specification in the                  

               middle of page 6” and that (answer, page 9) that “[p]erhaps the peeling noted is due more to the lack of             

               an adhesion layer, rather than the processing temperature.”  At the outset, we note that the specification           

               does not state that an annealing layer is “necessary.”  What is actually stated (page 6) is that “[t]here            

               will usually be an adhesion or contact layer . . . . ” Appellants assert (reply brief, page 5) that the reason       

               no adhesion layer of titanium was used for the annealing process was that “titanium is known to oxidize              

               and peel to cause shorting at such high anneal temperatures.” The Joshi Declaration further states (page             

               3) that “[a]nnealing at 1100EC for one hour [as in Brandmayr] would destroy substantially every                      

               partially built integrated circuit that is exposed to[] these conditions and, particularly, those structures         

               having a bottom electrode.”  In response, the examiner asserts (answer, page 10) that appellants’                    

               specification discloses platinum as a bottom electrode material, and that platinum has a melting point of            

               1769EC, which is well above the processing temperature of 1100EC disclosed by Brandmayr.  We are                     

               in agreement with appellants (reply brief, pages 19 and 20) that the Joshi Declaration does not allege               

               melting of the platinum electrode. The Joshi Declaration reports peeling of the electrode at high                    

               temperatures, and that peeling is different from melting, though both could result in the destruction of the         

               electrode.  We note that the Joshi Declaration used the general processes of the present invention                   









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