Helmut Schlessmann
16Patents
8h-index
25Co-inventors
72Inventor score
Filing activity: Nov 22, 1991 → Sep 30, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5330138A | Cable support for an electrically-operated portable handheld work apparatus | Emerging Cross-Sectional Technologies | 37 | Expired |
| US5774993A | Hand-held working tool, especially trimmer or edge cutter | Human Necessities | 22 | Expired |
| US5175932A | Portable handheld tool having a drive shaft rotatably journalled in a protective tube | Human Necessities | 22 | Expired |
| US5645026A | Internal combustion engine for a portable handheld work apparatus | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US5414934A | Exchangeable sleeve bearing for a vegetation cutter apparatus | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5842277A | Hand-held working tool, especially trimmer | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US5706777A | Suction air filter for a combustion engine with diaphragm carburetor | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5165565A | Closure for a vessel | Performing Operations; Transporting | 10 | Expired |
| US8516989B2 | Internal combustion engine having an elastic connecting duct | Mechanical Engineering; Lighting; Heating | 8 | Active |
| US5483931A | Drive device especially for a trimmer | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US5223770A | Portable handheld work apparatus having an electric drive motor | Electricity | 6 | Expired |
| US7293330B2 | Tubular handle for a manually guided implement | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7380637B2 | Exhaust-gas muffler | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US7228935B2 | Attachment pin for an exhaust-gas muffler | Emerging Cross-Sectional Technologies | 2 | Expired |
| US8671897B2 | Two-stroke engine | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US11104224B2 | Closure cap for an operating medium tank | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.