Inventor
WEIRICH MICHAEL
DE9 patents
⚠️ This page may combine multiple inventors who share the name “WEIRICH MICHAEL”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH
7 patentsUS6198231B1Mar 6, 2001
Circuit configuration for operating at least one discharge lamp
PATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH28 citations91
US6914394B2Jul 5, 2005
Supply circuit, in particular for a discharge lamp
PATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH14 citations82
US6690122B2Feb 10, 2004
Lamp ballast with SEPIC converter
PATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH11 citations72
US6555970B2Apr 29, 2003
Ballast for gas discharge lamps with shutdown of the filament heating
PATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH7 citations71
US6753659B2Jun 22, 2004
Operating device for discharge lamps having a preheating device
PATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH3 citations61
US6741040B2May 25, 2004
Operating device for lamps with a regulated SEPIC converter
PATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH6 citations61
US6657403B2Dec 2, 2003
Circuit arrangement for operating a fluorescent lamp
PATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH4 citations60