Walter Limmer
14Patents
3h-index
12Co-inventors
53Inventor score
Filing activity: Apr 5, 2000 → Jun 25, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6268758A | Circuit arrangement with half-bridge | Electricity | 19 | Expired |
| US7145293B2 | Electronic ballast having resonance excitation for generating a transfer voltage | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6362576B1 | Circuit arrangement for igniting a lamp | Emerging Cross-Sectional Technologies | 4 | Expired |
| US8531122B2 | Circuit arrangement and method for operation of a discharge lamp | Electricity | 3 | Active |
| US6831422B2 | Operating circuit with an improved power supply for a driver circuit | Emerging Cross-Sectional Technologies | 1 | Expired |
| US8760069B2 | Circuit arrangement and method for operating a high pressure discharge lamp | Electricity | 1 | Active |
| US7116084B2 | Step-up converter having power factor correction | Emerging Cross-Sectional Technologies | 1 | Expired |
| US9554430B2 | Lighting system with an interface having a power supply unit and at least one light source module | Emerging Cross-Sectional Technologies | 1 | Active |
| US7541744B2 | Electronic ballast for a high-pressure discharge lamp having a current-measuring device | Emerging Cross-Sectional Technologies | 1 | Expired |
| US8492994B2 | Method and circuit arrangement for making a lamp wattage available for operating at least one gas discharge lamp | Electricity | 0 | Active |
| US6891337B2 | Lighting system | Emerging Cross-Sectional Technologies | 0 | Expired |
| US8618739B2 | Circuit arrangement and method for operating discharge lamps | Electricity | 0 | Active |
| US8089220B2 | Circuit arrangement and method for operating a high-pressure discharge lamp | Emerging Cross-Sectional Technologies | 0 | Active |
| US8884544B2 | Method for operating a lamp and electronic ballast | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.