Stephanie Kwolek (July 31, 1923 – June 18, 2014)
Stephanie Louise Kwolek (July 31, 1923 – June 18, 2014) was an American chemist, whose career at the DuPont company covered over forty years. She is best known for inventing the first of a family of synthetic fibers of exceptional strength and stiffness: poly-paraphenylene terephthalamide—better known as Kevlar. For her discovery, Kwolek was awarded the DuPont company's Lavoisier Medal for outstanding technical achievement. As of June 2014, she was the only female employee to have received that honour. In 1995 she became the fourth woman to be added to the National Inventors Hall of Fame. Kwolek won numerous awards for her work in polymer chemistry, including the National Medal of Technology and the Perkin Medal.
Stephanie Louise Kwolek : The Times 23 June 2014