Frank Steffens
10Patents
2h-index
7Co-inventors
43Inventor score
Filing activity: Aug 1, 2006 → Aug 12, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8161834B2 | Transmission with power take-off drive | Emerging Cross-Sectional Technologies | 13 | Active |
| US11009102B2 | Range-change transmission device | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US11313442B2 | Range-change transmission device | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US12140211B2 | Group transmission device, in particular split transmission | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US11002351B2 | Range-change transmission device | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US7481128B2 | Gearshift unit for a transmission of a motor vehicle | Emerging Cross-Sectional Technologies | 0 | Active |
| US12018736B2 | Group transmission device, in particular split transmission | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US12228196B2 | Electric drive system | Emerging Cross-Sectional Technologies | 0 | Active |
| US12427848B2 | Hybrid-electric powertrain and lorry equipped with same | Emerging Cross-Sectional Technologies | 0 | Active |
| US11149824B2 | Electric drive for a motor vehicle, in particular for an automobile | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.