Ex parte LANGLEY et al. - Page 2




          Appeal No. 1995-3522                                                        
          Application No. 07/912,973                                                  


                                     BACKGROUND                                       
               The appellants’ invention relates to an apparatus for                  
          providing a blood component product.  According to appellants,              
          the blood component yield, such as the number of platelets,                 
          must be determined with respect to a particular collection and              
          associated therewith to obtain a useful blood component                     
          product (brief, page 4).  An understanding of the invention                 
          can be derived from a reading of exemplary claim 13 which is                
          reproduced below.                                                           
               13. A system for providing a blood component product                   
          having a determined yield pursuant to at least one on-line                  
          yield determination technique, comprising:                                  
               means for harvesting a plurality of a predetermined type               
          of a blood component from a source of blood;                                
               first means for providing a first set of predetermined                 
          information relating to said source of blood;                               
               second means for providing a second set of predetermined               
          information relating to said means for harvesting;                          
               third means for generating a predicted yield value based               
          upon said first and second sets of predetermined information,               
          said third means comprising said at least one on-line yield                 
          determination technique;                                                    
               fourth means for providing a first calibration factor                  
          based upon said third means in relation to a predetermined                  
          off-line yield determination technique, said predetermined                  
          off-line yield determination technique allowing for                         

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