Wolfram Hellmich
16Patents
8h-index
28Co-inventors
68Inventor score
Filing activity: Nov 27, 1990 → Sep 3, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5469828A | Fuel injection device according to the solid-state energy storage principle for internal combustion engines | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US6004127A | Oil burner | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US6158409A | Two-stroke engine piston bowl configurations | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5996548A | Method of operating an internal combustion engine | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5960766A | Method of operating an internal combustion engine | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5520154A | Fuel injection device according to the solid-state energy storage principle for internal combustion engines | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US5779454A | Combined pressure surge fuel pump and nozzle assembly | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US6109549A | Fuel injector for internal combustion engines and method for making same | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6173692A | Time delay ignition circuit for an internal combustion engine | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5131353A | Crank loop frame for a crank loop drive of an internal combustion engine | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US7093778B1 | Device for delivering and/or spraying flowable media, especially fluids | Electricity | 6 | Expired |
| US7186195B2 | Chain-tensioner with mechanical locking | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US6604505B2 | Method and apparatus for controlling the ignition point in internal combustion engines | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6615128B1 | Method for electronically trimming for an injection apparatus | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US6026792A | Method of operating a fuel injected engine | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6357416B1 | Process for controlling the ignition point in internal combustion engines | Emerging Cross-Sectional Technologies | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.