Global Patent Index - EP 1470569 A4

EP 1470569 A4 2007-10-17 - HIGH INTENSITY DISCHARGE LAMP WITH SINGLE CRYSTAL SAPPHIRE ENVELOPE

Title (en)

HIGH INTENSITY DISCHARGE LAMP WITH SINGLE CRYSTAL SAPPHIRE ENVELOPE

Title (de)

HOCHINTENSITÄTSENTLADUNGSLAMPE MIT EINKRISTALL-SAPHIRHÜLLE

Title (fr)

LAMPE A DECHARGE A HAUTE INTENSITE A ENVELOPPE EN SAPHIR MONOCRISTALLIN

Publication

EP 1470569 A4 (EN)

Application

EP 02707608 A

Priority

US 0202566 W

Abstract (en)

[origin: WO03030212A1] A high intensity discharge lamp constructed with a tubular envelope composed of single crystal sapphire (100) in which a continuous non-flash arc is created across multiple electrodes (207, 209) to generate a radiation emitting plasma. The lamp may operate at higher temperatures and pressures than conventional high intensity discharge lamps to produce greater luminance at any given power output. A wide range of gases and additives may be chosen. The lamp is a small powerful light source, has a longer effective life, and maintains a selected color temperature over the live of the lamp. The lamp may be operated without electrodes utilizing microwave or radio frequency radiation as a power source.

IPC 1-7 (main, further and additional classification)

H01J 61/88

IPC 8 full level (invention and additional information)

H01J 61/88 (2006.01); H01J 61/30 (2006.01); H01J 61/36 (2006.01); H01J 61/86 (2006.01); H01J 65/04 (2006.01)

CPC (invention and additional information)

H01J 61/302 (2013.01); H01J 61/363 (2013.01); H01J 61/86 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

WO 03030212 A1 20030410; CA 2465786 A1 20030410; EP 1470569 A1 20041027; EP 1470569 A4 20071017; JP 2005527935 A 20050915

INPADOC legal status


2009-02-18 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20080801

2007-10-17 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20070918

2004-10-27 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20040427

2004-10-27 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2004-10-27 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Countries: AL LT LV MK RO SI