Bernd Engel
31Patents
12h-index
28Co-inventors
81Inventor score
Filing activity: Jun 29, 1979 → Jun 13, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD592156S1 | Display for inverter for photovoltaic installation | General | 38 | Expired |
| USD592154S1 | Display for inverter for photovoltaic installation | General | 27 | Expired |
| USD592153S1 | Display for inverter for photovoltaic installation | General | 26 | Expired |
| US7576449B2 | Method for converting direct voltage into three-phase alternating voltage | Emerging Cross-Sectional Technologies | 25 | Active |
| USD590778S1 | Display for inverter for photovoltaic installation | General | 23 | Expired |
| USD604239S1 | Inverter | General | 22 | Expired |
| USD591692S1 | Display for inverter for photovoltaic installation | General | 17 | Expired |
| USD604237S1 | Inverter | General | 17 | Expired |
| USD591246S1 | Display for inverter for photovoltaic installation | General | 16 | Expired |
| USD610540S1 | Inverter | General | 13 | Expired |
| USD592155S1 | Display for inverter for photovoltaic installation | General | 13 | Expired |
| US8837098B2 | Method for limiting the generator voltage of a photovoltaic installation in case of danger and photovoltaic installation | Emerging Cross-Sectional Technologies | 12 | Active |
| US8053930B2 | Solar power plant | Emerging Cross-Sectional Technologies | 10 | Active |
| US8023288B2 | Inverter for grounded direct current source, more specifically for a photovoltaic generator | Emerging Cross-Sectional Technologies | 10 | Active |
| USD604238S1 | Inverter | General | 9 | Expired |
| US9065345B2 | Transformerless inverter comprising a DC/DC converter | Emerging Cross-Sectional Technologies | 7 | Active |
| US8899194B2 | Two-stroke engine | Mechanical Engineering; Lighting; Heating | 7 | Active |
| US7768799B2 | Apparatus for accomodating a plurality of individual inverters | Emerging Cross-Sectional Technologies | 7 | Active |
| US6260393A | Hole punch for high-pressure shaping tool | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6341514B2 | Hole punch for high-pressure shaping tool | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4961026A | Proximity focused image intensifier having a glass spacer ring between a photocathode and a fluorescent screen disk | Electricity | 5 | Expired |
| US4254437A | Image intensifier attachment for attachment to the front lens of a television camera | Electricity | 5 | Expired |
| US6591650B2 | High-pressure bulge-forming apparatus | Emerging Cross-Sectional Technologies | 4 | Expired |
| US8138638B2 | DC/DC converter | Emerging Cross-Sectional Technologies | 4 | Active |
| US6341515B2 | High-pressure deformation of two plates into hollow workpiece | Emerging Cross-Sectional Technologies | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.