China become world's top patent filer in over 4 decades

China become world's top patent filer in over 4 decades banglate
goto 4 dosoke china ai prothom usa ke haralo patent file a.1.china 2.usa 3.japan 4.germany 5.south korea.china total patent file are 58990.and usa 57840 patent file.current wipo director general is franchis gyri.Susagotom sabaike.