This is the second part of our biweekly series that focuses on black men who changed the world with their inventions.   Thomas L. Jennings: Thomas Jennings was the first black man to receive a patent. The patent was awarded on March 3, 1821 (US Patent 3306x) for his discovery of a process called dry-scouring, which was the forerunner of today’s modern dry-cleaning. Jennings was born a freeman in New York City, New York, in 1791. He went on to become a tailor and open a dry cleaning business. While working as a dry cleaner, He developed dry scouring. This … Continue reading Two Inventions That Will Not Exist Without Black Men