James L. Buie (1920 – September 25, 1988) was an American scientist and inventor working for TRW Inc who developed transistor–transistor logic, a form of integrated circuit technology that became widely used early in the integrated circuit industry.
Russell L. De Valois (December 15, 1926 – September 20, 2003) was an American scientist recognized for his pioneering research on spatial and color vision.
Robert Nason Beck (March 26, 1928, in San Angelo, Texas – August 6, 2008, in Chicago, Illinois) was an American scientist and a pioneer in the field of nuclear medicine. Part of a University of Chicago team, he was the first to propose, in 1961, the use of the radioisotope technetium-99m to detect disease using Single Photon Emission Computed Tomography, a technique that is used an estimated 20 million times a year throughout the world. Beck also helped develop collimators for sharpening the images produced by gamma-ray scanners, and was referred to as 'Mr. Collimator' by colleagues.