PatentBrief

Inventor

Stephanie Louise Kwolek

Patents indexed

1

Year range

1972

Associated with

Years active

1972

Total patents

1

Most recent

1972

Domains

materials-sciencedefensepolymer-chemistrytextilessafety

Activity by decade

1970s
1

Patents

1

US 3671542·1972·EI Du Pont de Nemours and Co

Kevlar — The Fiber Five Times Stronger Than Steel, Invented by Accident

Stephanie Kwolek's 1965 DuPont patent describes Kevlar — the aramid fiber that is five times stronger than steel by weight, discovered when Kwolek insisted on testing a strange cloudy polymer solution her colleagues thought was defective.