Ex parte TSERNG et al. - Page 3




          Appeal No. 1997-3484                                                        
          Application 08/089,359                                                      

                         a first drain contact above said wide bandgap                
               layer, wherein said first source contact and said first                
               drain contact are alloyed and thereby driven into said                 
               material structure to make contact with said low-noise                 
               channel layer; and                                                     
                         a first gate contact to said low-noise buffer                
               layer; and                                                             
                    a second active region comprising:                                
                         a second source contact above said wide                      
               bandgap layer;                                                         
                         a second drain contact above said wide bandgap               
               layer, wherein said second source contact and said                     
               second drain contact are alloyed and thereby driven                    
               into said material structure to make contact with said                 
               power channel layer; and                                               
                         a second gate contact to said wide band-gap                  
               [sic] layer;                                                           
                    wherein said first active region and said second                  
               active region are electrically isolated from one                       
               another.                                                               

               The Examiner relies on the following prior art:                        
               Itoh                     4,866,490       September 12,                 
          1989                                                                        
               Takikawa            5,302,840           April 12, 1994                 
          (filed June 17, 1992)                                                       

               Claims 1 and 3-5 stand rejected under 35 U.S.C.                        
          § 102(e) as anticipated by, or in the alternative, under                    
          35 U.S.C. § 103 as being unpatentable over Takikawa.                        

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