Peter Hellmann
7Patents
5h-index
11Co-inventors
52Inventor score
Filing activity: Dec 1, 1999 → Sep 29, 2005
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6111515A | Method of and apparatus for preventing accidents during working with hand-held tools with a rotatable working tool | Emerging Cross-Sectional Technologies | 57 | Expired |
| US6868919B1 | Switching device for multifunctional hand-held machine tool | Performing Operations; Transporting | 40 | Expired |
| US6843140B2 | Safety module for a multifunctional handheld tool | Performing Operations; Transporting | 27 | Expired |
| US6644450B2 | Safety clutch for electrical hand-held tool | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US6741803B2 | Circuit and process for regulating the speed of universal electric motors | Electricity | 7 | Expired |
| US6697570B2 | Rotary electrical hand-tool device and startup safety routine | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7900466B2 | Air-conditioning system for a motor vehicle | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.