Assignee
KNOBEL LICHTTECH
CH6 patents
Top patents by PatentIndex Score
US5451845ASep 19, 1995
Device for protecting a ballast circuit from excess voltage
KNOBEL LICHTTECH21 citations92
US6426597B2Jul 30, 2002
Circuit arrangement for operating gas discharge lamps
KNOBEL LICHTTECH56 citations91
US5550433AAug 27, 1996
Driver circuit for discharge lamps
KNOBEL LICHTTECH22 citations90
US5563477AOct 8, 1996
Method for operating a ballast for discharge lamps
KNOBEL LICHTTECH17 citations72
US5504399AApr 2, 1996
Electrical circuit for operating a fluorescent lamp and for measuring the lamp current
KNOBEL LICHTTECH12 citations71
US5455486AOct 3, 1995
Method and circuitry for igniting fluorescent lamps at a predetermined temperature of their cathodes
KNOBEL LICHTTECH9 citations71