Stephanie Kwolek

Stephanie Louise Kwolek (July 31, 1923 – June 18, 2014) was an American chemist. She invented poly-paraphenylene terephthalamide—better known as Kevlar. 
She was born in the Pittsburgh suburb of New Kensington, Pennsylvania. Kwolek won many awards for her work in polymer chemistry. 
Kwolek died in Wilmington, Delaware from a short-illness, at the age 90 on June 18, 2014.