Inventor · disambiguated record
Zdenko Grajcar
Also filed as: GRAJCAR ZDENKO
101 granted patents·31 pending applications·1,510 citations·filing 2001–2024
99Inventor score
Files withONCE INNOVATIONS INC61GRAJCAR ZDENKO24SIGNIFY NORTH AMERICA CORP23NEXXUS LIGHTING INC15ONCE INC2
Top patents by PatentIndex Score
132 records- 0199US8596804B2Light sources adapted to spectral sensitivity of diurnal avians and humansGRAJCAR ZDENKO·Filed 2011·Granted Dec 3, 2013·45 cites·18 claims
- 0299US8373363B2Reduction of harmonic distortion for LED loadsONCE INNOVATIONS INC·Filed 2010·Granted Feb 12, 2013·93 cites·19 claims
- 0398US9482397B2Light sources adapted to spectral sensitivity of diurnal avians and humansONCE INNOVATIONS INC·Filed 2015·Granted Nov 1, 2016·19 cites·8 claims
- 0498US8643308B2Spectral shift control for dimmable AC LED lightingGRAJCAR ZDENKO·Filed 2010·Granted Feb 4, 2014·70 cites·17 claims
- 0598US7993031B2Apparatus for housing a light assemblyNEXXUS LIGHTING INC·Filed 2008·Granted Aug 9, 2011·58 cites·23 claims
- 0698US7974099B2Apparatus and methods for thermal management of light emitting diodesNEXXUS LIGHTING INC·Filed 2008·Granted Jul 5, 2011·64 cites·11 claims
- 0797US9709228B2Light sources adapted to spectral sensitivity of diurnal avians and humansONCE INNOVATIONS INC·Filed 2014·Granted Jul 18, 2017·20 cites·10 claims
- 0897US9185888B2Aquaculture lighting devices and methodsONCE INNOVATIONS INC·Filed 2014·Granted Nov 17, 2015·16 cites·7 claims
- 0997US8858005B2Light sources adapted to spectral sensitivity of diurnal avians and humansONCE INNOVATIONS INC·Filed 2013·Granted Oct 14, 2014·20 cites·19 claims
- 1097US8531136B2Architecture for high power factor and low harmonic distortion LED lightingGRAJCAR ZDENKO·Filed 2010·Granted Sep 10, 2013·47 cites·18 claims
- 1196US9844210B2System and method of enhancing reproduction in avianONCE INNOVATIONS INC·Filed 2015·Granted Dec 19, 2017·22 cites·12 claims
- 1296US8922136B2Reduction of harmonic distortion for LED loadsONCE INNOVATIONS INC·Filed 2012·Granted Dec 30, 2014·22 cites·16 claims
- 1396US8876313B2Light sources adapted to spectral sensitivity of diurnal avians and humansONCE INNOVATIONS INC·Filed 2013·Granted Nov 4, 2014·21 cites·11 claims
- 1496US8796955B2Reduction of harmonic distortion for LED loadsONCE INNOVATIONS INC·Filed 2012·Granted Aug 5, 2014·22 cites·19 claims
- 1596US8593044B2Modular architecture for sealed LED light enginesGRAJCAR ZDENKO·Filed 2011·Granted Nov 26, 2013·33 cites·10 claims
- 1696US8384307B2Continuous step driverNEXXUS LIGHTING INC·Filed 2010·Granted Feb 26, 2013·34 cites·12 claims
- 1796US8324642B2Light emitting diode assembly and methodsGRAJCAR ZDENKO·Filed 2010·Granted Dec 4, 2012·30 cites·13 claims
- 1896US8183794B2Apparatus and methods for the thermal regulation of light emitting diodes in signageGRAJCAR ZDENKO·Filed 2011·Granted May 22, 2012·19 cites·9 claims
- 1996US7948190B2Apparatus and methods for the thermal regulation of light emitting diodes in signageNEXXUS LIGHTING INC·Filed 2008·Granted May 24, 2011·41 cites·9 claims
- 2096US7598682B2Current regulator apparatus and methodsNEXXUS LIGHTING INC·Filed 2007·Granted Oct 6, 2009·39 cites·12 claims
- 2195US10244595B2Photonic engine system for actuating the photosynthetic electron transport chainONCE INNOVATIONS INC·Filed 2016·Granted Mar 26, 2019·15 cites·11 claims
- 2295US9247603B2Shunt regulator for spectral shift controlled light sourceONCE INNOVATIONS INC·Filed 2015·Granted Jan 26, 2016·22 cites·7 claims
- 2395USD601276SLightNEXXUS LIGHTING INC·Filed 2009·Granted Sep 29, 2009·54 cites·1 claims
- 2494USD701497SHeat sink of a light emitting diode deviceONCE INNOVATIONS INC·Filed 2013·Granted Mar 25, 2014·14 cites·1 claims
- 2594USD641520SLED downlight with trim and spacersONCE INNOVATIONS INC·Filed 2009·Granted Jul 12, 2011·55 cites·1 claims
- 2693US9700019B2LED lighting for livestock developmentGRAJCAR ZDENKO·Filed 2010·Granted Jul 11, 2017·22 cites·6 claims
- 2793US9675054B2Aquaculture lighting devices and methodsONCE INNOVATIONS INC·Filed 2015·Granted Jun 13, 2017·20 cites·3 claims
- 2893US9210755B2DC LED driverless lighting assemblyONCE INNOVATIONS INC·Filed 2014·Granted Dec 8, 2015·15 cites·7 claims
- 2992US10455819B2Methods for controlling sex of oviparous embryos using light sourcesSIGNIFY NORTH AMERICA CORP·Filed 2016·Granted Oct 29, 2019·6 cites·17 claims
- 3092US10237956B2System and method of illuminating livestockONCE INNOVATIONS INC·Filed 2014·Granted Mar 19, 2019·12 cites·10 claims
- 3192US10028448B2Light sources adapted to spectral sensitivity of plantsONCE INNOVATIONS INC·Filed 2015·Granted Jul 24, 2018·12 cites·14 claims
- 3292US9756837B2Differential illumination to select egg laying sitesGRAJCAR ZDENKO·Filed 2012·Granted Sep 12, 2017·15 cites·8 claims
- 3392US9433046B2Driving circuitry for LED lighting with reduced total harmonic distortionGRAJCAR ZDENKO·Filed 2012·Granted Aug 30, 2016·15 cites·14 claims
- 3492US8651691B2Integral conduit modular lightingGRAJCAR ZDENKO·Filed 2011·Granted Feb 18, 2014·21 cites·19 claims
- 3591US10104875B2System and method of enhancing reproduction in avianONCE INNOVATIONS INC·Filed 2017·Granted Oct 23, 2018·5 cites·20 claims
- 3691US9253844B2Reduction of harmonic distortion for LED loadsONCE INNOVATIONS INC·Filed 2014·Granted Feb 2, 2016·8 cites·1 claims
- 3790US10524426B2Light sources adapted to spectral sensitivity of plantSIGNIFY NORTH AMERICA CORP·Filed 2018·Granted Jan 7, 2020·6 cites·10 claims
- 3889US10212892B2Light sources adapted to spectral sensitivity of plantONCE INNOVATIONS INC·Filed 2013·Granted Feb 26, 2019·9 cites·12 claims
- 3989US9433194B2Aquaculture lighting devices and methodsONCE INNOVATIONS INC·Filed 2012·Granted Sep 6, 2016·13 cites·11 claims
- 4089US9255674B2Method of manufacturing a light emitting diode lighting assemblyONCE INNOVATIONS INC·Filed 2013·Granted Feb 9, 2016·8 cites·14 claims
- 4189USD601277SLightNEXXUS LIGHTING INC·Filed 2009·Granted Sep 29, 2009·32 cites·1 claims
- 4288US10154657B2Lighting system and control for aquacultureONCE INNOVATIONS INC·Filed 2017·Granted Dec 18, 2018·6 cites·18 claims
- 4388US9380665B2Spectral shift control for dimmable AC LED lightingONCE INNOVATIONS INC·Filed 2013·Granted Jun 28, 2016·14 cites·6 claims
- 4488USD621974SLED lampONCE INNOVATIONS INC·Filed 2009·Granted Aug 17, 2010·35 cites·1 claims
- 4588USD610723SLightNEXXUS LIGHTING INC·Filed 2009·Granted Feb 23, 2010·30 cites·1 claims
- 4687US10206378B2System and method of enhancing swine reproductionONCE INNOVATIONS INC·Filed 2015·Granted Feb 19, 2019·4 cites·12 claims
- 4787USD621973SLampONCE INNOVATIONS INC·Filed 2009·Granted Aug 17, 2010·33 cites·1 claims
- 4885US10485072B2Shunt regulator for spectral shift controlled light sourceSIGNIFY NORTH AMERICA CORP·Filed 2018·Granted Nov 19, 2019·2 cites·16 claims
- 4985US10201152B2Systems and methods for promoting biological responses in incubated eggsONCE INNOVATIONS INC·Filed 2016·Granted Feb 12, 2019·5 cites·7 claims
- 5085US9867243B2Reduction of harmonic distortion for LED loadsONCE INNOVATIONS INC·Filed 2016·Granted Jan 9, 2018·3 cites·4 claims
Showing the top 50 of 132 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →