Ex Parte COHEN et al - Page 4



          Appeal No. 2000-1585                                                        
          Application No. 08/883,427                                                  

                    a)  providing a semiconductor device comprising a                 
               semiconductor substrate, at least two FET or bipolar                   
               transistor devices and a trench in the substrate                       
               located between said devices;                                          
                    b)  flowing a flowable oxide into said trench;                    
                    c)  curing said flowable oxide; and                               
                    d)  annealing said flowable oxide, wherein said                   
               annealing is carried out in the presence of hydrogen to                
               thereby cause hydrogen to diffuse into the flowable                    
               oxide.                                                                 
               The examiner relies upon the following references:                     
               Sobczak                       4,567,834      Mar. 18, 1986             
               Ballance et al. (Ballance)    5,320,868      Jun. 14, 1994             
               Claim 27 stands rejected under 35 U.S.C. § 103(a) as being             
          unpatentable over Sobczak in view of Ballance.                              
               Rather than repeat the arguments of appellants and the                 
          examiner, we make reference to the brief (paper no. 17) and the             
          examiner’s answer (paper no. 18) for the respective details                 
          thereof.                                                                    
                                       OPINION                                        
               We have considered the rejections advanced by the examiner             
          and the supporting arguments.  We have, likewise, reviewed the              
          appellants’ arguments set forth in the brief.                               
               We affirm.                                                             

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