First African American woman doctor to receive a patent for a medical invention

Dr. Patricia Bath, an ophthalmologist from New York, but living in Los Angeles when she received her patent, became the first African American woman doctor to receive a patent for a medical invention. Patricia Bath's patent (no. 4,744,360), a method for removing cataract lenses, transformed eye surgery, using a laser device making the procedure more accurate.

Source: www.about.com