Inventor
KRUMMEL PETER
DE13 patents
⚠️ This page may combine multiple inventors who share the name “KRUMMEL PETER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SIEMENS AG
6 patentsUS5854538ADec 29, 1998
Circuit arrangement for electrode pre-heating of a fluorescent lamp
SIEMENS AG56 citations95
US5705894AJan 6, 1998
Method for operating at least one fluorescent lamp with an electronic ballast, as well as ballast therefor
SIEMENS AG24 citations92
US4996462AFeb 26, 1991
Electronic ballast for fluoroscent lamps
SIEMENS AG39 citations92
US4547706AOct 15, 1985
Inverter with a load circuit containing a series oscillating circuit and a discharge lamp
SIEMENS AG29 citations92
US4481460ANov 6, 1984
Inverter with charging regulator having a variable keying ratio
SIEMENS AG30 citations89
US4616158AOct 7, 1986
Arrangement for shutting off an inverter
SIEMENS AG22 citations78
PATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH
3 patentsUS6972531B2Dec 6, 2005
Method for operating at least one low-pressure discharge lamp
PATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH31 citations92
US6717374B2Apr 6, 2004
Microcontroller, switched-mode power supply, ballast for operating at least one electric lamp, and method of operating at least one electric lamp
PATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH37 citations92
US6310447B1Oct 30, 2001
Method for operating at least one fluorescent lamp, and electronic ballast therefor
PATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH6 citations62
KRUMMEL PETER
3 patentsUS8098022B2Jan 17, 2012
Circuit configuration for operating at least one discharge lamp and method for generating an auxiliary voltage
KRUMMEL PETER2 citations59
US8878462B2Nov 4, 2014
Circuit arrangement and method for operating at least one discharge lamp
KRUMMEL PETER0 citations38
US8796941B2Aug 5, 2014
Method and circuit arrangement for operating at least one discharge lamp
KRUMMEL PETER0 citations35