Ex parte KAZUYA ONO et al. - Page 2




             Appeal No. 95-0442                                                                                   
             Application 08/026,183                                                                               


             application.  Claim 1 is illustrative and reads as follows:                                          
                    1.    A powder coating composition having good penetrability                                  
             and suitability for impregnation of rotor coil windings, said                                        
             composition consisting essentially of:                                                               
                    (a) 100 parts by weight of a mixed epoxy resin having an                                      
             epoxy equivalent of 800-2000 and including (a-1) diglycidyl ether                                    
             of bisphenol A having an epoxy equivalent of 180-2500 and (a-2) a                                    
             rubber-modified epoxy resin having an epoxy equivalent of 180-                                       
             2500 and obtained by reaction of a diglycidyl ether of bisphenol                                     
             A with a carboxyl terminated acrylonitrile-butadiene copolymer,                                      
             wherein said copolymer is 1-4 wt.% of said mixed epoxy resin;                                        
                    (b) a mixed curing agent consisting of (b-1) 0.05-5 parts                                     
             by weight of an imidazole compound, (b-2) 0.5-10 parts by weight                                     
             of dicyanodiamide and (b-3) 1-10 parts by weight of a dihydrazide                                    
             of a dibasic carboxylic acid; and                                                                    
                    (c) 50-100 parts by weight of silica.                                                         
                                               THE REFERENCES                                                     
             Kaufman                       4,420,605         Dec.  13, 1983                                       
             Yamamoto et al. (Yamamoto)    4,695,598         Sept. 22, 1987                                       
                                                THE REJECTION                                                     
                    Claims 1 and 3-5 stand rejected under 35 U.S.C.  103 as                                      
             being unpatentable over Yamamoto in view of Kaufman.                                                 
                                                    OPINION                                                       
                    We have carefully considered all of the arguments advanced                                    
             by appellants and the examiner and agree with appellants that the                                    
             aforementioned rejection is not well founded.  Accordingly, this                                     
             rejection will be reversed.                                                                          
                    Appellants’ invention is a powder coating composition which                                   

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