Inventor · disambiguated record
Engbert Bernard Gerard Nijhof
Also filed as: NIJHOF ENGBERT · NIJHOF ENGBERT B G · NIJHOF ENGBERT BERNARD GERARD · VAN LOON JOHANNES C F
19 granted patents·2 pending applications·1,188 citations·filing 1977–2007
96Inventor score
Files withPHILIPS CORP9LUMILEDS LIGHTING LLC4KONINKL PHILIPS ELECTRONICS NV3BUCKS MARCEL JOHANNES MARIA2NIJHOF ENGBERT1
Top patents by PatentIndex Score
21 records- 0195US6304464B1Flyback as LED driverPHILIPS CORP·Filed 2000·Granted Oct 16, 2001·154 cites·7 claims
- 0293US6094014ACircuit arrangement, and signaling light provided with the circuit arrangementPHILIPS CORP·Filed 1998·Granted Jul 25, 2000·135 cites·7 claims
- 0392US6922022B2LED switching arrangement for enhancing electromagnetic interferenceLUMILEDS LIGHTING LLC·Filed 2002·Granted Jul 26, 2005·73 cites·5 claims
- 0492US6147458ACircuit arrangement and signalling light provided with the circuit arrangementPHILIPS CORP·Filed 1999·Granted Nov 14, 2000·177 cites·21 claims
- 0591US7030572B2Lighting arrangementLUMILEDS LIGHTING LLC·Filed 2003·Granted Apr 18, 2006·82 cites·7 claims
- 0691US6040663ACircuit arrangementPHILIPS CORP·Filed 1998·Granted Mar 21, 2000·116 cites·11 claims
- 0789US6930452B2Circuit arrangementLUMILEDS LIGHTING LLC·Filed 2003·Granted Aug 16, 2005·69 cites·9 claims
- 0889US6013988ACircuit arrangement, and signalling light provided with the circuit arrangementPHILIPS CORP·Filed 1998·Granted Jan 11, 2000·91 cites·5 claims
- 0987US7202641B2DC-to-DC converterPHILIPS LUMILEDS LIGHTING CO·Filed 2004·Granted Apr 10, 2007·70 cites·14 claims
- 1086US6972525B2Led switching arrangementBUCKS MARCEL JOHANNES MARIA·Filed 2002·Granted Dec 6, 2005·42 cites·10 claims
- 1183US6051935ACircuit arrangement for controlling luminous flux produced by a light sourcePHILIPS CORP·Filed 1998·Granted Apr 18, 2000·59 cites·4 claims
- 1282US6118259AControlled current generator for operating light emitting diodesPHILIPS CORP·Filed 1999·Granted Sep 12, 2000·53 cites·16 claims
- 1381US6933767B2Circuit arrangementLUMILEDS LIGHTING LLC·Filed 2003·Granted Aug 23, 2005·36 cites·9 claims
- 1461US4189669ACircuit arrangement for generating a pulse-width modulated signalPHILIPS CORP·Filed 1977·Granted Feb 19, 1980·13 cites·21 claims
- 1557US8174211B2Method and system for operating a discharge lamp such as to detect defective operation of the lampBUCKS MARCEL JOHANNES MARIA·Filed 2007·Granted May 8, 2012·2 cites·7 claims
- 1657US8174202B2Lamp driving circuitNIJHOF ENGBERT BERNARD GERARD·Filed 2007·Granted May 8, 2012·2 cites·12 claims
- 1746US2010026189A1Lamp driving circuit, and detection circuit for detecting an end-of-life conditionKONINKL PHILIPS ELECTRONICS NV·Filed 2007·Application pending·0 cites
- 1841US2010060184A1Method and system for operating a gas discharge lampKONINKL PHILIPS ELECTRONICS NV·Filed 2007·Application pending·0 cites
- 1940US5729121APower supply apparatusPHILIPS CORP·Filed 1996·Granted Mar 17, 1998·12 cites·15 claims
- 2038US6430065B2Power circuit for a semiconductor light source operable from a solid state relayKONINKL PHILIPS ELECTRONICS NV·Filed 2000·Granted Aug 6, 2002·2 cites·10 claims
- 2135US8227997B2Lamp driving circuitNIJHOF ENGBERT·Filed 2007·Granted Jul 24, 2012·0 cites·19 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →