Joachim Hoffmann
41Patents
12h-index
73Co-inventors
84Inventor score
Filing activity: Oct 6, 1975 → Nov 25, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5010649A | Cutterhead for a vegetation cutter apparatus | Human Necessities | 25 | Expired |
| US5118205A | Bearing unit for a bottom bracket bearing of a bicycle or the like | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4989321A | Rotatably driven cutterhead for a vegetation cutting apparatus | Human Necessities | 24 | Expired |
| US4866846A | Cutterhead for a vegetation cutter | Human Necessities | 21 | Expired |
| US4711331A | Freewheel overrunning clutch, particularly for a two-wheel vehicle | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US5351403A | Protective shield for a free-cutting tool | Human Necessities | 16 | Expired |
| US4009855A | Trestle | Performing Operations; Transporting | 15 | Expired |
| US6048284A | Pulley with a damper between rotary input and output members | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4893410A | Cutterhead for a vegetation cutter | Human Necessities | 15 | Expired |
| US5557388A | Printing or copying machine having a cooling device for the recording substrate | Physics | 14 | Expired |
| US7905223B2 | Guide cart and power tool with guide a cart | Performing Operations; Transporting | 12 | Active |
| US6640449B1 | Cutting blade for a trimmer | Human Necessities | 12 | Expired |
| US6112419A | Cutter head with cover for drive pinion | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US5890292A | Portable hand-guided work apparatus having a tool guard | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5568241A | Thermofixing device for a printing or copying machines having a low temperature preheating saddle | Physics | 8 | Expired |
| US7520799B2 | Protective cover for a hand-held cut-off machine | Performing Operations; Transporting | 7 | Active |
| US7770707B2 | Axially engaging and disengaging one-way clutch and a stator having an axially engaging and disengaging one-way clutch | Mechanical Engineering; Lighting; Heating | 6 | Active |
| US7350509B2 | Delivery unit | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US5359777A | Cutterhead for a string trimmer | Human Necessities | 5 | Expired |
| US7261624B2 | Protective cover for a hand-held cut-off machine | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5036648A | Cutterhead for a vegetation cutter apparatus | Emerging Cross-Sectional Technologies | 5 | Expired |
| US8668027B2 | Power tool | Performing Operations; Transporting | 4 | Active |
| US6070044A | Device for applying release agent to the surface of a fixing roller of an electrographic printer or copier | Emerging Cross-Sectional Technologies | 4 | Expired |
| US8151957B2 | Anti-rotation mechanism for a closed piston torque converter | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US6293383A | Torsion vibration damper | Mechanical Engineering; Lighting; Heating | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.