Patent · US Active

Incandescent lamp having an illuminant that contains a high-temperature resistant metal compound

US7911121B2 · kind B2 · utility

0Cited by

6References

10Claims

0Family size

Assignee

OSRAM Gesellschaft mit beschraenkter Haftung · DE

Inventors

Axel Bunk · Berlin, DE
Matthias Damm · Gaimersheim, DE
Georg Rosenbauer · Wassertrüdingen, DE

Key dates

Filing date	Oct 18, 2005
Grant date	Mar 22, 2011
Priority date	—
Expiry date	Mar 30, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH01K1/52
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to an incandescent lamp (1) which is provided with an illuminant (7) which is inserted in a bulb (2) together with a filling in a vacuum-tight manner, the illuminant (7) comprising a metal carbide that has a melting point above that of tungsten. The bulb also comprises a source and a sink for a material of which the illuminant is depleted during use.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.