2014 Event Researchers have developed synthetic nucleobases, the molecules that form the backbone of DNA; organisms successfully replicated the synthetic bases, implying that creation of new life forms with these additional bases may be possible in the future 1971 Event Berkeley chemists announces 1st synthetic growth hormones 1959 Event De Beers firm of South Africa announces synthetic diamond 1948 Event 1st use of synthetic rubber in asphaltic concrete, Akron, Ohio 1943 Event Manufacturers get permission to use synthetic rubber for baseball core 1940 Event 1st synthetic rubber tire exhibited Akron Oh 1940 Event The synthetic rubber tire unveiled 1938 Event DuPont announces its new synthetic fiber will be called "nylon" 1938 Event Du Pont named its new synthetic fiber "nylon" 1933 Event 1st synthetic detergent, "Dreft" by Procter and Gamble, goes on sale 1931 Event 1st commercially produced synthetic rubber manufactured 1931 Event Dupont introduces synthetic rubber 1930 Event Synthetic rubber 1st produced
