OSRAM Gesellschaft mit beschraenkter Haftung
251Patents
216Active
251Granted
57Portfolio score
Filing activity: Mar 11, 1985 → Jul 11, 2011 · 198 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD600368S1 | LED lamp | General | 124 | Expired |
| USD593223S1 | Lamp | General | 108 | Expired |
| USD600367S1 | Lamp | General | 84 | Expired |
| USD641098S1 | LED luminaire | General | 80 | Expired |
| US8378583B2 | Feedforward control of semiconductor light sources | Emerging Cross-Sectional Technologies | 58 | Active |
| US7806562B2 | Lighting device comprising at least one light-emitting diode and vehicle headlight | Mechanical Engineering; Lighting; Heating | 57 | Expired |
| US7559674B2 | Mounting arrangement for LED lamps | Emerging Cross-Sectional Technologies | 55 | Active |
| US7642734B2 | Method and system for dimming light sources | Electricity | 44 | Active |
| USD640822S1 | LED luminaire | General | 43 | Expired |
| US8558477B2 | Method and device for obtaining conduction angle, method and device for driving LED | Emerging Cross-Sectional Technologies | 38 | Active |
| US7712922B2 | Illumination unit comprising an LED light source | Electricity | 37 | Active |
| USD619739S1 | LED lamp | General | 32 | Expired |
| US8480252B2 | Illumination device | Mechanical Engineering; Lighting; Heating | 29 | Active |
| US7626346B2 | LED circuit with current control | Electricity | 27 | Active |
| US7800119B2 | Semiconductor lamp | Emerging Cross-Sectional Technologies | 27 | Active |
| USD568498S1 | Reflector lamp | General | 24 | Expired |
| USD696439S1 | Lighting appliance | General | 20 | Active |
| USD612973S1 | Portable lamp | General | 19 | Expired |
| USD327132S | Fluorescent lamp | General | 18 | Expired |
| US7994516B2 | LED module, and LED chain containing the same | Electricity | 18 | Active |
| US7874697B2 | Lamp | Mechanical Engineering; Lighting; Heating | 17 | Active |
| US7872278B2 | Light emitting diode system, method for producing such a system, and backlighting device | Electricity | 17 | Active |
| US7548150B2 | Method for the allocation of short addresses in illumination systems | Electricity | 16 | Active |
| US7621667B2 | Lighting device comprising at least one light-emitting diode and vehicle headlight | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US7965031B2 | White-emitting LED having a defined color temperature | Electricity | 14 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.