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Tungsram
 
 
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TungSRAM is a Hungarian
Hungary

Hungary , officially in English the Republic of Hungary , is a landlocked country in the Carpathian Basin of Central Europe, bordered by Austria, Slovakia, Ukraine, Romania, Serbia, Croatia, and Slovenia....
 manufacturer of light bulbs and vacuum tube
Vacuum tube

In electronics, a vacuum tube, electron tube , thermionic valve, or just valve is a device used to amplifier, switch, otherwise modify, or create an Electricity signal by controlling the movement of electrons in a low-pressure space....
s since 1896. It is now a subsidiary of General Electric
General Electric

The General Electric Company, or GE is a multinational corporation United States technology and Service s conglomerate incorporated in the State of New York....
 and its name is used as a brand name only.

This company announced the patent
Patent

A patent is a set of exclusive rights granted by a state to an inventor or his assignee for a term of patent in exchange for a disclosure of an invention....
 for electric bulbs with a tungsten
Tungsten

Tungsten , also known as wolfram , is a chemical element that has the symbol W and atomic number 74.A steel-gray metal, tungsten is found in several ores, including wolframite and scheelite....
 filament in 1903. Later in 1934, they also announced a patent for Imre Bródy
Imre Bródy

Imre Br?dy , a Hungary physicist, who invented in 1930 the krypton-filled fluorescent lamps ,with fellow-Hungarian inventors Emil Theisz, Ferenc K?r?sy and Tivadar Millner....
's






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TungSRAM is a Hungarian
Hungary

Hungary , officially in English the Republic of Hungary , is a landlocked country in the Carpathian Basin of Central Europe, bordered by Austria, Slovakia, Ukraine, Romania, Serbia, Croatia, and Slovenia....
 manufacturer of light bulbs and vacuum tube
Vacuum tube

In electronics, a vacuum tube, electron tube , thermionic valve, or just valve is a device used to amplifier, switch, otherwise modify, or create an Electricity signal by controlling the movement of electrons in a low-pressure space....
s since 1896. It is now a subsidiary of General Electric
General Electric

The General Electric Company, or GE is a multinational corporation United States technology and Service s conglomerate incorporated in the State of New York....
 and its name is used as a brand name only.

This company announced the patent
Patent

A patent is a set of exclusive rights granted by a state to an inventor or his assignee for a term of patent in exchange for a disclosure of an invention....
 for electric bulbs with a tungsten
Tungsten

Tungsten , also known as wolfram , is a chemical element that has the symbol W and atomic number 74.A steel-gray metal, tungsten is found in several ores, including wolframite and scheelite....
 filament in 1903. Later in 1934, they also announced a patent for Imre Bródy
Imre Bródy

Imre Br?dy , a Hungary physicist, who invented in 1930 the krypton-filled fluorescent lamps ,with fellow-Hungarian inventors Emil Theisz, Ferenc K?r?sy and Tivadar Millner....
's electric bulb filled with krypton
KRYPTON

KRYPTON is a frame language computer programming language."An Essential Hybrid Reasoning System: Knowledge and Symbol Level Accounts of KRYPTON", R.J. Brachman et al, Proc IJCAI-85, 1985....
. Both provide longer lifetime for electric bulbs.

The name Tungsram is a portmanteau of "tungsten" and "wolfram" , as tungsten is called in German and many other languages, the name of the metal used for making the filaments.

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