Rillieux was an inventor and engineer, best remembered for his invention of the multiple-effect evaporator. His invention was meant to improve the sugar-refining process. The evaporator was created by 1843 and was implemented in 13 sugar factories. This machine prevents discoloration and burning.
Patricia Bath (born Nov. 4, 1942)
Bath is an ophthalmologist and inventor known for being the first African-American female doctor to receive a patent for a medical invention. While attending Columbia University, she discovered that African-Americans were more likely to go blind than whites. She was one of the first Black women to complete a residency program in ophthalmology. In 1988, Bath received a patent for the Laserphaco Probe to help restore sight.