Gerhard Lepperhoff
16Patents
11h-index
13Co-inventors
69Inventor score
Filing activity: Feb 10, 1986 → Apr 24, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5671600A | Method of reducing the NO.sub.x emission of a supercharged piston-type internal combustion engine | Emerging Cross-Sectional Technologies | 42 | Expired |
| US4730454A | Process and system for the oxidation of engine emission particulates deposited in a particulate filter trap | Emerging Cross-Sectional Technologies | 39 | Expired |
| US4897096A | System for the regeneration of a particulate filter trap | Emerging Cross-Sectional Technologies | 37 | Expired |
| US4872889A | Filter system for the removal of engine emission particulates | Mechanical Engineering; Lighting; Heating | 33 | Expired |
| US4730455A | Process and system for the regeneration of particulate filter traps | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4634459A | Particle filtration and removal system | Emerging Cross-Sectional Technologies | 21 | Expired |
| US5472462A | Filter arrangement for removal of soot particles from the exhaust gases of an internal combustion engine | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6185930A | Method for reducing pollutant emission in motor vehicles | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4948403A | Filter system for the removal of engine emission particulates | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4709549A | Assembly for engine exhaust gas particulate filter traps | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4709547A | Process for the regeneration of engine emission particulates deposited in a particulate trap | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US6202408A | Method and apparatus for a zero-point stabilization of an exaust gas sensor | Physics | 4 | Expired |
| US7207318B2 | Method for operation of a device for energy conversion using a main fuel and at least one auxiliary fuel | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6269631A | Process and device for operating an internal combustion engine with less pollutant emission | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US6335790B1 | Method for determining the spatial concentration of the components of a gas mixture in a combustion chamber | Physics | 1 | Expired |
| USRE42771E1 | Method of operation of a device for energy conversion using a main fuel and at least one auxiliary fuel | General | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.