Patent · US Expired

Low-pressure gas discharge lamp with a mercury-free gas filling

US6731070B2 · kind B2 · utility

2Cited by

1References

11Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Robert Scholl · Roetgen, DE
Rainer Hilbig · Aachen, DE
Achim Koerber · Kerkrade, NL
Johannes Baier · Harsewinkel, DE
Thomas Juestel · Aachen, DE
Peter Josef Schmidt · Aachen, DE

Key dates

Filing date	Jun 11, 2002
Grant date	May 4, 2004
Priority date	—
Expiry date	Jun 11, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH01J61/12
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A low-pressure gas discharge lamp having a gas discharge vessel containing a gas filling with a chalcogenide of the elements of the 4th main group of the periodic systems of elements and a buffer gas, and having inner or outer electrodes and means for generating and maintaining a low-pressure gas discharge.

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