Biography of john christian inventors

1791–1859

The first African American U.S. patent recipient, Thomas L.

Jennings was working as a tailor and businessman in New York City when he invented a process for dry-cleaning delicate clothing known as “dry-scouring.” Jennings applied for a patent in 1820 and received his history-making approval the following year.

With the money he earned from his invention, the formerly enslaved person donated to abolitionist causes and even reportedly freed his still-enslaved family members.

1832-1904

In 1892, Sarah Boone patented a design improvement to Elijah McCoy’s ironing board.

The North Carolina native wrote in her application that the purpose of her invention was “to produce a cheap, simple, convenient, and highly effective device, particularly adapted to be used in ironing the sleeves and bodies of ladies’ garments.”

Read More about Sarah Boone