Inventor · disambiguated record
Bernhard Schemmel
Also filed as: SCHEMMEL BERNHARD
11 granted patents·3 pending applications·57 citations·filing 1999–2007
87Inventor score
Technology areasH05B
Files withPATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH7BUSSE OLAF3OSRAM GMBH3HIERL WOLFGANG1
Top patents by PatentIndex Score
14 records- 0181US8134297B2Ballast for a discharge lamp with adaptive preheatingBUSSE OLAF·Filed 2006·Granted Mar 13, 2012·10 cites·16 claims
- 0267US6198231B1Circuit configuration for operating at least one discharge lampPATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH·Filed 1999·Granted Mar 6, 2001·28 cites·13 claims
- 0362US7863830B2Electronic ballast and method for operating an electric lampOSRAM GMBH·Filed 2006·Granted Jan 4, 2011·2 cites·19 claims
- 0462US7309963B2Smoothing circuit for improving EMCPATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH·Filed 2006·Granted Dec 18, 2007·2 cites·19 claims
- 0559US8558459B2Electronic ballast and method for operating an electrical lampBUSSE OLAF·Filed 2007·Granted Oct 15, 2013·1 cites·20 claims
- 0657US6555970B2Ballast for gas discharge lamps with shutdown of the filament heatingPATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH·Filed 2002·Granted Apr 29, 2003·7 cites·11 claims
- 0750US6657403B2Circuit arrangement for operating a fluorescent lampPATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH·Filed 2002·Granted Dec 2, 2003·4 cites·13 claims
- 0848US6753659B2Operating device for discharge lamps having a preheating devicePATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH·Filed 2002·Granted Jun 22, 2004·3 cites·5 claims
- 0947US7327094B2Circuit arrangement and method for operating at least one electric lampPATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH·Filed 2006·Granted Feb 5, 2008·0 cites·13 claims
- 1045US2010109554A1Illumination device having inrush current limiting circuitOSRAM GMBH·Filed 2007·Application pending·0 cites
- 1144US7786683B2Circuit arrangement and method for operating at least one electric lamp and at least one LEDOSRAM GMBH·Filed 2006·Granted Aug 31, 2010·0 cites·12 claims
- 1242US2006290299A1Circuit arrangement and method for operating at least one LED and at least one electric lampBUSSE OLAF·Filed 2006·Application pending·0 cites
- 1338US8319446B2Circuit for controlling a fluorescent lamp, method for operating the circuit, and system comprising the circuitHIERL WOLFGANG·Filed 2007·Granted Nov 27, 2012·0 cites·15 claims
- 1437US2004183450A1Method and apparatus for determining the resonant frequency of a resonant circuitPATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH·Filed 2004·Application pending·0 cites
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