Ex parte ARZENO et al. - Page 2




             Appeal No. 94-2062                                                                                   
             Application 07/870,841                                                                               


             claims 19-27, which are all of the claims remaining in the                                           
             application.                                                                                         
                                                THE INVENTION                                                     
                    Appellants claim a method for the selective amidination                                       
             of a diamino compound having a particular generic formula to                                         
             an                                                                                                   
             "-amino-T-guanidino compound by reacting the diamino compound                                        
             with a formamidinesulfonic acid of a specified generic                                               
             formula.  Claim 19 is illustrative and is appended to this                                           
             decision.                                                                                            
                                               THE REFERENCES                                                     
             Patchett et al. (Patchett)    0 012 401          Jun. 25, 1980                                       
                    (European patent application)                                                                 
             Alhede et al. (Alhede)        1 587 258          Apr.  1, 1981                                       
                    (British patent)                                                                              
                                                THE REJECTION                                                     
                    Claims 19-27 stand rejected under 35 U.S.C. § 103 as                                          
             being unpatentable over Alhede alone or in combination with                                          
             Patchett.                                                                                            
                                                    OPINION                                                       
                    We have carefully considered all of the arguments                                             


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