Assignee
KNOBEL LICHTTECH
CH·6 granted patents·137 citations·filing 1993–2001
Top patents by PatentIndex Score
6 records- 0185US6426597B2Circuit arrangement for operating gas discharge lampsKNOBEL LICHTTECH·Filed 2001·Granted Jul 30, 2002·56 cites·33 claims
- 0263US5451845ADevice for protecting a ballast circuit from excess voltageKNOBEL LICHTTECH·Filed 1994·Granted Sep 19, 1995·21 cites·8 claims
- 0359US5550433ADriver circuit for discharge lampsKNOBEL LICHTTECH·Filed 1995·Granted Aug 27, 1996·22 cites·17 claims
- 0455US5563477AMethod for operating a ballast for discharge lampsKNOBEL LICHTTECH·Filed 1995·Granted Oct 8, 1996·17 cites·15 claims
- 0548US5504399AElectrical circuit for operating a fluorescent lamp and for measuring the lamp currentKNOBEL LICHTTECH·Filed 1993·Granted Apr 2, 1996·12 cites·15 claims
- 0641US5455486AMethod and circuitry for igniting fluorescent lamps at a predetermined temperature of their cathodesKNOBEL LICHTTECH·Filed 1993·Granted Oct 3, 1995·9 cites·11 claims
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