Inventor · disambiguated record
Andrew Johnsen
Also filed as: JOHNSEN ANDREW · JOHNSEN ANDREW O
17 granted patents·4 pending applications·113 citations·filing 2004–2019
90Inventor score
Top patents by PatentIndex Score
21 records- 0189US7863827B2Ceramic metal halide lamp bi-modal power regulation controlOSRAM SYLVANIA INC·Filed 2008·Granted Jan 4, 2011·36 cites·21 claims
- 0289US7042165B2Driver circuit for LED vehicle lampOSRAM SYLVANIA INC·Filed 2004·Granted May 9, 2006·61 cites·13 claims
- 0371US7841742B2Circuit board slot for an integral HID reflector lampOSRAM SYLVANIA INC·Filed 2008·Granted Nov 30, 2010·9 cites·9 claims
- 0465US9992846B2Active damping circuitOSRAM SYLVANIA INC·Filed 2016·Granted Jun 5, 2018·1 cites·16 claims
- 0559US7982402B2Integrated igniter base for ceramic metal halide light sourceOSRAM SYLVANIA INC·Filed 2008·Granted Jul 19, 2011·1 cites·20 claims
- 0657US8076865B2Ignition for ceramic metal halide high frequency ballastsJOHNSEN ANDREW·Filed 2008·Granted Dec 13, 2011·2 cites·16 claims
- 0753US7931514B2Method of making an integral HID reflector lampOSRAM SYLVANIA INC·Filed 2008·Granted Apr 26, 2011·0 cites·9 claims
- 0852US10225908B2Active damping circuitOSRAM SYLVANIA INC·Filed 2016·Granted Mar 5, 2019·0 cites·19 claims
- 0951US2009279304A1Heat sink for integral HID reflector lampOSRAM SYLVANIA INC·Filed 2008·Application pending·0 cites
- 1051US2009289553A1Integrated ceramic metal halide high frequency ballast assemblyOSRAM SYLVANIA INC·Filed 2008·Application pending·0 cites
- 1150US10327295B2Multi string controller with independent current setting for each stringOSRAM SYLVANIA INC·Filed 2016·Granted Jun 18, 2019·0 cites·16 claims
- 1250US7839098B2Microcontroller based ignition in high frequency ceramic metal halide lampsOSRAM SYLVANIA INC·Filed 2008·Granted Nov 23, 2010·0 cites·20 claims
- 1347US7919926B2Aggregate ignition method in high frequency metal halide lampsOSRAM SYLVANIA INC·Filed 2008·Granted Apr 5, 2011·0 cites·20 claims
- 1446US7057356B2High intensity discharge lamp with boost circuitOSRAM SYLVANIA INC·Filed 2004·Granted Jun 6, 2006·2 cites·6 claims
- 1544US9295129B1Turn on optimizationXIAO PENG·Filed 2015·Granted Mar 22, 2016·0 cites·20 claims
- 1643US7211965B2High intensity discharge lamp with current sense resistorOSRAM SYLVANIA INC·Filed 2004·Granted May 1, 2007·1 cites·2 claims
- 1740US7402956B2Ballast with zero voltage switching converterOSRAM SYLVANIA INC·Filed 2005·Granted Jul 22, 2008·0 cites·13 claims
- 1840US7230349B2High intensity discharge lamp ballast with anti-theft operating modeJOHNSEN ANDREW O·Filed 2005·Granted Jun 12, 2007·0 cites·8 claims
- 1933US2020008277A1Switchable stabilization load at low dimming levelsZEIGLER MARKUS·Filed 2019·Application pending·0 cites
- 2032US8378585B2High frequency integrated HID lamp with run-up currentOSRAM SYLVANIA INC·Filed 2010·Granted Feb 19, 2013·0 cites·17 claims
- 2132US2017063240A1Dc-dc flyback converter with primary side auxiliary voltage outputKUMAR NITIN·Filed 2015·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →