Mary Dixon Kies

Mary Dixon Kies
Born(1752-03-21)March 21, 1752
Died1837 (aged 8485)
Resting placeOld South Killingly Cemetery, Killingly, Connecticut
OccupationInventor
Known forFirst woman to receive a U.S. patent
Spouses
  • Isaac Pike
  • John Kies
ChildrenIsaac Pike II

Mary Dixon Kies (March 21, 1752 – 1837) was an American inventor. On May 5, 1809, her patent for a new technique of weaving straw with silk and thread to make hats was signed by President James Madison.

Some sources say she was the first woman to receive a US patent, however other sources cite Hannah Slater in 1793, or Hazel Irwin, who received a patent for a cheese press in 1808, as the first.