After his doctoral work on development of titanium nitride thin films, he joined Microelectronics and Computer Technology Corporation (MCC) in Austin, Texas, a consortium of leading US companies. At MCC, he led the advanced materials projects for several years. Dr. Kumar’s work on nanocrystalline diamond field emitter flat panel displays, started in 1989 at MCC, led to the first and some of the most fundamental patents in this field.