Franz Knopf
22Patents
6h-index
16Co-inventors
66Inventor score
Filing activity: Mar 24, 1978 → Jan 19, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4610326A | Air cooling arrangement for encapsulated vehicle engine | Mechanical Engineering; Lighting; Heating | 49 | Expired |
| US6504700B1 | Active discharge collector for minimizing positive and/or negative charges on moving material webs | Electricity | 17 | Expired |
| US4455971A | Water-cooled internal combustion engine with a sound absorbing cover | Performing Operations; Transporting | 12 | Expired |
| US4459944A | Water-cooled internal combustion engine with a sound-absorbing cover | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US4208965A | Method for electrostatic assistance in printing processes, and printing machines having electrostatic substrate contact pressure | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4514140A | Axial fan | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US6285032A | Device for removing the gaseous laminar boundary layer of a web | Performing Operations; Transporting | 6 | Expired |
| US5044275A | Electrostatic printing assist system | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6308574A | Measuring device to measure the pressure of an atmosphere | Performing Operations; Transporting | 6 | Expired |
| US7345766B2 | Measuring chamber for photo-acoustical sensors | Physics | 5 | Expired |
| US8308846B2 | Method and device for precipitating impurities from a stream of gas | Performing Operations; Transporting | 5 | Active |
| US7431897B2 | Apparatus replacing atmospheric oxygen with an inert gas from a laminar air boundary layer and application of said apparatus | Mechanical Engineering; Lighting; Heating | 5 | Active |
| US6827781B1 | Device for humidifying a material web | Performing Operations; Transporting | 4 | Expired |
| US5322011A | Pressure cylinder with electrostatically assisted ink transfer | Performing Operations; Transporting | 4 | Expired |
| US8474304B2 | Device for the determination of the concentration of solid particles | Physics | 3 | Active |
| US6748855B1 | Device and method for blocking a stack of stacked objects | Emerging Cross-Sectional Technologies | 2 | Expired |
| US6508174B1 | Electrostatic printing aid | Emerging Cross-Sectional Technologies | 1 | Expired |
| US8444538B2 | Impression roller and use of the same | Emerging Cross-Sectional Technologies | 1 | Active |
| US6159555A | Method and device for electrostatic charging | Performing Operations; Transporting | 1 | Expired |
| US5517384A | Compound surface-charging electrode | Electricity | 1 | Expired |
| US6445562B1 | Method and device for electrostatic charging | Performing Operations; Transporting | 1 | Expired |
| US10727651B2 | Emission tip assembly and method for operating same | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.