Rubicon Technology, Inc. develops, manufactures, and sells monocrystalline sapphire and other crystalline products for light-emitting diodes (LED), radio frequency integrated circuits (RFICs), blue laser diodes, optoelectronics, and other optical applications. The company fabricates its products from the boules and sells them in various categories, including core, as-cut, as-ground, and polished forms in two, three, four, six, and eight inch diameter wafers. It manufactures sapphire substrates and optical windows, including two inch to four inch sapphire cores and wafers for use in LEDs and blue laser diodes for solid state lighting and electronic applications; six-inch polished sapphire wafers that are used in the LED applications and in silicon-on-sapphire RFICs; and eight inch wafers for research and development efforts, as well as sells sapphire products used for windows and lenses in military, aerospace, sensor, and other applications. The company also offers optically-polished windows and ground window blanks of sapphire and various fluoride compounds, such as calcium, barium, and magnesium fluoride. Rubicon Technology, Inc. sells its products primarily to wafer polishing companies and semiconductor device manufacturers in Asia, North America, and Europe. The company was incorporated in 2001 and is headquartered in Bensenville, Illinois.