Mary Dixon Kies died on October 22, 1837, in Brooklyn, New York, in poverty, largely unrecognized for her groundbreaking patent.
Mary Dixon Kies died on October 22, 1837, in Brooklyn, New York, reportedly in poverty. Despite her historic distinction as the first woman to receive a U.S. patent, Kies did not achieve significant financial success from her invention. The War of 1812 disrupted the straw hat trade that had initially benefited from her technique, and changing fashions eventually diminished demand.
She was buried in an unmarked grave, and for many decades her contribution to American innovation went largely unrecognized by the public and even by patent historians. It was not until the twentieth and twenty-first centuries that researchers and institutions, including the Connecticut Historical Society and the National Inventors Hall of Fame, worked to recover and honor her story.
Her death, largely overlooked at the time, stands in poignant contrast to her lasting legacy: today she is celebrated as a pioneering figure who broke the gender barrier in the U.S. patent system, paving the way for the generations of women inventors who followed. In 2006, nearly 170 years after her death, she was formally inducted into the National Inventors Hall of Fame, cementing her place in the history of American innovation.