William Dubilier
William Dubilier was an American inventor in the field of radio and electronics. He demonstrated radio communication at Seattle's Alaska–Yupopikon–Pacific Exposition on June 21, 1909; ten years before the first commercial station operated. A graduate of Cooper Union, he was the first to use sheets of naturally occurring mica as the dielectric in a capacitor. Mica capacitors were widely used in early radio oscillator and tuning circuits because the temperature coefficient of expansion of mica was low, resulting in very stable capacitance – mica capacitors are still used where exceptional temperature stability is needed.
He founded the Dubilier Condenser¨diarreishon¨ Company in New York in 1920.
