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You can use Global Patent Index (GPI) to carry out detailed searches in the EPO's worldwide bibliographic (DOCDB), legal event (INPADOC) and full-text data sets, and download or visualise the search results for statistical analysis.

Current content: 155 263 406 patent documents

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215 613 new documents added

1 342 057 documents amended

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EP 1016329 A1 20000705 - GROUP DIMMING SYSTEM FOR GAS DISCHARGE LAMPS

Title (en)

GROUP DIMMING SYSTEM FOR GAS DISCHARGE LAMPS

Title (de)

EINRICHTUNG ZUR GRUPPENWEISEN HELLIGKEITSREGELUNG VON GASENTLADUNGSLAMPEN

Title (fr)

SYSTEME DE VARIATEUR POUR GROUPE DE LAMPES A DECHARGE GAZEUSE

Publication

EP 1016329 A1 20000705 (EN)

Application

EP 98947138 A 19980918

Priority

US 9819520 W 19980918
US 5920197 P 19970918

Abstract (en)

[origin: WO9914988A1] The invention relates to dimming a plurality of gas discharge lamps without using high current switching components, thereby reducing electromagnetic interference commonly associated with the switching of high currents.

IPC 1-7

H05B 37/02; H05B 41/392

IPC 8 full level

H05B 37/02 (2006.01); H05B 41/392 (2006.01)

CPC (source: EP)

H05B 41/3927 (2013.01); H05B 47/18 (2020.01)

Citation (search report)

See references of WO 9914988A1

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

WO 9914988 A1 19990325; AU 9398798 A 19990405; EP 1016329 A1 20000705

DOCDB simple family (application)

US 9819520 W 19980918; AU 9398798 A 19980918; EP 98947138 A 19980918