Ulrich Zehnder
23Patents
9h-index
48Co-inventors
75Inventor score
Filing activity: Jun 20, 1977 → Sep 16, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6849881B1 | Optical semiconductor device comprising a multiple quantum well structure | Electricity | 101 | Expired |
| US6730939B2 | Radiation emitting semiconductor device | Electricity | 77 | Expired |
| US7106090B2 | Optical semiconductor device with multiple quantum well structure | Electricity | 55 | Expired |
| US6372536B1 | II-VI semiconductor component having at least one junction between a layer containing Se and a layer containing BeTe, and process for producing the junction | Electricity | 50 | Expired |
| US7015514B2 | Light-emitting diode and method for the production thereof | Electricity | 37 | Expired |
| US7446344B2 | Radiation-emitting semiconductor chip, method for production thereof and radiation-emitting component | Electricity | 29 | Expired |
| US6897488B2 | Radiation-emitting chip | Electricity | 21 | Expired |
| US6891199B2 | Radiation-emitting semiconductor chip and light-emitting diode | Electricity | 15 | Expired |
| US7227191B2 | Optoelectronic component having a plurality of current expansion layers and method for producing it | Emerging Cross-Sectional Technologies | 12 | Expired |
| US7592194B2 | Radiation-emitting and/or -receiving semiconductor component and method for the patterned application of a contact to a semiconductor body | Electricity | 9 | Expired |
| US4130038A | Thread parting device for textile machines | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6972212B2 | Method for producing a radiation-emitting semiconductor chip | Electricity | 8 | Expired |
| US7742677B2 | Method for producing an optoelectronic component | Emerging Cross-Sectional Technologies | 8 | Active |
| US7556974B2 | Optical semiconductor device with multiple quantum well structure | Electricity | 7 | Active |
| US8138511B2 | Radiation-emitting semiconductor component and method for producing the semiconductor component | Electricity | 6 | Active |
| US7205578B2 | Semiconductor component which emits radiation, and method for producing the same | Electricity | 6 | Expired |
| US6946687B2 | Radiation-emitting semiconductor chip with a radiation-emitting active layer | Electricity | 5 | Expired |
| US7169632B2 | Radiation-emitting semiconductor component and method for producing the semiconductor component | Electricity | 5 | Expired |
| US7195942B2 | Radiation emitting semiconductor device | Electricity | 5 | Expired |
| US8772804B2 | Semiconductor light-emitting diode and method for producing a semiconductor light-emitting diode | Electricity | 5 | Active |
| US6858881B2 | Radiation-emitting semiconductor chip, and method for producing the semiconductor chip | Electricity | 3 | Expired |
| US8278767B2 | Optoelectronic component | Electricity | 3 | Active |
| US8907359B2 | Optoelectronic semiconductor component | Electricity | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.