Stephanie Kwolek, pioneering DuPont chemist who invented Kevlar, dies at 90
Friday, June 20, 2014 - 12:00
in Physics & Chemistry
Frances BurnsWILMINGTON, Del., June 20 (UPI) -- Stephanie Kwolek, the Dupont chemist who invented Kevlar while working on a substance to strengthen radial tires, has died at 90 in a Delaware hospital.