Johan Marra
16Patents
8h-index
24Co-inventors
68Inventor score
Filing activity: Aug 2, 2005 → Jan 19, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7722211B2 | Light engine | Emerging Cross-Sectional Technologies | 52 | Expired |
| US7855449B2 | Cooling device for a light-emitting semiconductor device and a method of manufacturing such a cooling device | Electricity | 19 | Active |
| US8402815B2 | Air pollution sensor system | Physics | 17 | Active |
| US7836751B2 | Ultra fine particle sensor | Physics | 16 | Active |
| US7857892B2 | Air pollution sensor system | Physics | 14 | Active |
| US8123840B2 | Electrostatic particle filter | Performing Operations; Transporting | 13 | Active |
| US8452489B2 | Controlling system for controlling an air handling system | Performing Operations; Transporting | 10 | Active |
| US9579664B2 | Cleaning device for cleaning the air-ionizing part of an electrode | Performing Operations; Transporting | 10 | Active |
| US10710098B2 | Cleaning device for cleaning an air-ionizing part of an electrode | Performing Operations; Transporting | 8 | Active |
| US9417207B2 | Gas sensing apparatus | Physics | 4 | Active |
| US10364994B2 | Air humidification and/or purification | Emerging Cross-Sectional Technologies | 3 | Active |
| US8627733B2 | Device for characterizing a size distribution of electrically-charged airborne particles in an air flow | Physics | 2 | Active |
| US10299623B2 | Coffee dispensing apparatus | Human Necessities | 1 | Active |
| US8701466B2 | Device for characterizing the evolution over time of a size distribution of electrically-charged airborne particles in an airflow | Physics | 1 | Active |
| US10859485B2 | Particle sensor and sensing method | Physics | 1 | Active |
| US9943800B2 | Apparatus for gas cleaning | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.