DuPont chemist Stephanie Kwolek, inventor of body army component Kevlar, dies at 90 in Del.

  • by: Associated Press
  • Updated: June 20, 2014 - 7:25 AM

WILMINGTON, Del. — Stephanie Kwolek, a pioneering female chemist at DuPont who invented the exceedingly tough fibers widely used in Kevlar body armor, has died, colleagues said Friday. She was 90.

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