William D. Coolidge developed a method of making "ductile Tungsten" from Sintered Tungsten
1906 Massachusetts, U.S.
In 1906, William D. Coolidge developed a method of making "ductile tungsten" from sintered tungsten which could be made into filaments while working for General Electric Company. By 1911 General Electric began selling incandescent light bulbs with ductile tungsten wire.
