Ex parte OLE K. NILSSEN - Page 2




              Appeal No. 95-0325                                                                                                                       
              Application 07/859,616                                                                                                                   

                       This is a decision on appeal under 35 U.S.C.  134 from the final rejection of claims 27-33                                     
              and 43-47, all of the claims pending in the application.                                                                                 
                       The claimed invention is best illustrated by claim 27 reproduced below.                                                         
                                27.  An arrangement comprising:                                                                                        
                                        a source operative to provide an AC voltage at a pair of AC terminals; and                                     
                                        a circuit connected with the AC terminals and operable to power a gas                                          
                       discharge lamp; the circuit being characterized by:  (i) providing a conditioned voltage at                                     
                       a pair of terminals; and (ii) including a transistor conducting intermittently at a time-                                       
                       varying  switching  frequency,  thereby  to  maintain  the  absolute  magnitude  of  the                                        
                       conditioned voltage substantially constant.                                                                                     

                       The examiner relies on the following reference:                                                                                 
                       Kuroi et al. (Kuroi)    4,187,448     February 5, 1980                                                                          
                       The specification stands objected to under 35 U.S.C.  112, first paragraph, as failing to                                      
              provide a written description for the terms "conducting intermittently at a time-varying switching                                       
              frequency" in claims 27, 43, and 47; "time-varying at a frequency equal to twice the frequency of                                        
              the AC voltage" in claim 28; "a transistor conducting intermittently with a time-varying duty-cycle                                      
              at a switching frequency" in claim 31; and "the duty-cycle varies at a frequency equal to twice the                                      
              frequency of the AC voltage" in claim 32 (Final Rejection, Paper No. 26, page 2).  Claims 27-33                                          
              and 43-47 stand rejected under  112, first paragraph, for the reasons set forth in the objection.                                       
                       Claims 27-33 and 43-47 stand rejected under 35 U.S.C.  102(b) as being anticipated by                                          
              Kuroi.                                                                                                                                   


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