Thomas Edison of the Edison patent to charge a more reasonable rate for the use of the Edison patent rights and lowering the price of the electric lamp. On October 8, 1883, the US patent office ruled that Edison's patent was based on the work of William E. Sawyer and was, therefore, invalid. Litigation continued for nearly six years, until October 6, 1889, when a judge ruled that Edison's electric light improvement claim for "a filament of carbon of high resistance" was valid. To avoid a possible court battle with Joseph Swan, whose British patent had been awarded a year before Edison's,
General Electric employees of GE have been awarded the Nobel Prize: Irving Langmuir in 1932 and Ivar Giaever in 1973. During 1889, Thomas Edison had business interests in many electricity-related companies including "Edison Lamp Company", a lamp manufacturer in East Newark, New Jersey; "Edison Machine Works", a manufacturer of dynamos and large electric motors in Schenectady, New York; "Bergmann & Company", a manufacturer of electric lighting fixtures, sockets, and other electric lighting devices; and "Edison Electric Light Company", the patent-holding company and the financial arm backed by J.P. Morgan and the Vanderbilt family for Edison's lighting experiments. In 1889, Drexel, Morgan &