Ex parte ENGDAHL et al. - Page 5




          Appeal No. 1997-3434                                                        
          Application No. 08/307,075                                                  


                         calculating the depth of interaction of said                 
                         incident gamma ray within said scintillating                 
                         crystal as a function of the amplitudes of                   
                         said electrical output signals generated by                  
                         said first and second arrays of photodiodes.                 
               The examiner has not relied on any references to reject                
          the claims on appeal.                                                       
               Claims 2 and 8 through 13 stand rejected under the first               
          and second paragraphs of 35 U.S.C. § 112 because they are                   
          nonenabled and the scope and meaning thereof can not be                     
          ascertained because “the specification does not identify                    
          corresponding structure, material or acts (as appropriate)”                 
          for the claimed expression “circuitry . . . for measuring the               
          depth of interaction of said incident gamma ray within said                 
          scintillating crystal” [claim 2], and the claimed expression                
          “calculating the depth of interaction of said incident gamma                
          ray within said scintillating crystal . . .” [claim 8]                      
          (Answer, pages 2 and 3).                                                    
               Reference is made to the briefs and the answer for the                 
          respective positions of the appellants and the examiner.                    
                                       OPINION                                        
               The indefiniteness and the lack of enablement rejections               
          of claims 2 and 8 through 13 are reversed.                                  
                                          5                                           





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