Penicillin and its history By Cam1902 Jan 1, 1896 First time noticed Penicillin was noticed by Ernest Duchesne in France Period: Jan 1, 1896 to Dec 31, 1948 Penicillin history Jan 1, 1928 Fleming rediscovered Penicillin Jan 1, 1929 Fleming named it Jan 1, 1939 Florey demonstrated it's abilities Jan 1, 1941 Florey and Norman Heatly went to the US with it Nov 17, 1941 Andrew J Moyer and Heatly produced more penicillin Jan 1, 1943 It was the most effective antibacterial agent Jan 1, 1947 Microbes start resisting penicillin Jan 1, 1948 Andrew was granted a patentfor mass production of penicillin