Inventor · disambiguated record
Michael Weirich
Also filed as: WEIRICH MICHAEL · WEIRICH MICHAEL P
11 granted patents·173 citations·filing 1991–2021
90Inventor score
Files withPATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH7TECUMSEH PRODUCTS CO2FAIRCHILD SEMICONDUCTOR1INFINEON TECHNOLOGIES AUSTRIA AG1
Top patents by PatentIndex Score
11 records- 0189US5373697AHydraulic fluid system and dump valve mechanism for a hydrostatic transaxleTECUMSEH PRODUCTS CO·Filed 1991·Granted Dec 20, 1994·79 cites·12 claims
- 0273US7525259B2Primary side regulated power supply system with constant current outputFAIRCHILD SEMICONDUCTOR·Filed 2006·Granted Apr 28, 2009·12 cites·20 claims
- 0367US6198231B1Circuit configuration for operating at least one discharge lampPATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH·Filed 1999·Granted Mar 6, 2001·28 cites·13 claims
- 0465US6690122B2Lamp ballast with SEPIC converterPATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH·Filed 2002·Granted Feb 10, 2004·11 cites·2 claims
- 0558US6914394B2Supply circuit, in particular for a discharge lampPATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH·Filed 2003·Granted Jul 5, 2005·14 cites·6 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
- 0756US6741040B2Operating device for lamps with a regulated SEPIC converterPATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH·Filed 2003·Granted May 25, 2004·6 cites·16 claims
- 0853US11785687B2Power converter and synchronous-asynchronous mode controlINFINEON TECHNOLOGIES AUSTRIA AG·Filed 2021·Granted Oct 10, 2023·0 cites·26 claims
- 0950US6657403B2Circuit arrangement for operating a fluorescent lampPATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH·Filed 2002·Granted Dec 2, 2003·4 cites·13 claims
- 1048US6753659B2Operating device for discharge lamps having a preheating devicePATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH·Filed 2002·Granted Jun 22, 2004·3 cites·5 claims
- 1139US5177967AHydrostatic transaxleTECUMSEH PRODUCTS CO·Filed 1991·Granted Jan 12, 1993·9 cites·14 claims
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