JX Crystals, Inc - The company carries out research in several fields in thermophotovoltaics and is a manufacturer of low bandgap gallium antimonide (GaSb) photovoltaic cells. www.jxcrystals.com
McDermott Technology, Inc. (MTI) - 500 Watt Thermophotovoltaic (TPV) portable power system operating on military logistic fuel. www.mtiresearch.com/tpv.html