Ex parte KORMANN et al. - Page 1




                               THIS OPINION WAS NOT WRITTEN FOR PUBLICATION                                                     

               The opinion in support of the decision being entered today (1) was not written for publication in a law journal  
               and (2) is not binding precedent of the Board.                                                                   

                                                                                                  Paper No. 19                  
                                UNITED STATES PATENT AND TRADEMARK OFFICE                                                       
                                                       ____________                                                             
                                     BEFORE THE BOARD OF PATENT APPEALS                                                         
                                                  AND INTERFERENCES                                                             
                                                       ____________                                                             
                                 Ex parte CLAUDIUS KORMANN, MICHEL R. ANSEAU                                                    
                                                AND ROBERT N. MULLER                                                            
                                                       ____________                                                             
                                                   Appeal No. 1997-2199                                                         
                                                Application No. 08/369,340                                                      
                                                       ____________                                                             
                                                          ON BRIEF                                                              
                                                       ____________                                                             
               Before OWENS, WALTZ, and LIEBERMAN, Administrative Patent Judges.                                                
               LIEBERMAN, Administrative Patent Judge.                                                                          


                                           DECISION ON APPEAL                                                                   
               This is an appeal under 35 U.S.C.  134 from the examiner’s refusal to allow                                     
               claims 1 and 20 which are all the claims pending in the application.                                             
                                                    THE INVENTION                                                              
               The invention is directed to an MRI contrasting medium consisting essentially of an                              
               aqueous dispersion of super paramagnetic solid particles, and a polyelectrolyte.  The                            
               super paramagnetic particles have a particle size of 7-50 nm, a surface area of 30-                              






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