Patent · US Expired

High-pressure discharge lamp

US6414451B1 · kind B1 · utility

7Cited by

7References

28Claims

0Family size

Assignee

W.C. Heraeus GmbH & Co. KG · DE

Inventors

Reinhard Baake · Hösbach, DE
David Francis Lupton · Gelnhausen, DE

Key dates

Filing date	Mar 20, 2001
Grant date	Jul 2, 2002
Priority date	—
Expiry date	Mar 20, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH01J61/36
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A discharge lamp having a discharge vessel through whose wall at least one current feedthrough is guided. A discharge electrode is arranged on one end of the current feedthrough. The current feedthrough is made of at least two separate parts and at least one part is made of niobium, tantalum or alloys based on niobium and/or tantalum. The second part is made of material which is more resistant to oxidation than the first part.

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