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31/07/1923 Chemist Stephanie Kwolek si born

Kwolek 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 February 2015, she was the only female employee to have received that honor.


  • Essentials 

  • Early life and education 

  • DuPont career 

  • Awards and honors