Helmar Amend
10Patents
3h-index
18Co-inventors
53Inventor score
Filing activity: Jan 16, 2001 → Mar 5, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6502315B2 | Work apparatus having a centrifugal clutch | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US6945203B2 | Two-cycle engine | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US7458153B2 | Method for making a cylinder for a two-stroke engine | Emerging Cross-Sectional Technologies | 3 | Expired |
| US7066120B2 | Two-cycle engine | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US8033896B2 | Protective cover for a hand-held cut-off machine | Performing Operations; Transporting | 2 | Active |
| US9272438B2 | Guide bar having a carbon fiber reinforced plastic insert | Performing Operations; Transporting | 2 | Active |
| US7159314B2 | Method for making a cylinder | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7021253B2 | Two-cycle engine | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US6832582B2 | Two-stroke engine and method of making the same | Mechanical Engineering; Lighting; Heating | 0 | Expired |
| US7278395B2 | Manually operated implement driven by an internal combustion engine | Mechanical Engineering; Lighting; Heating | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.