Helmut Pfeifle
7Patents
6h-index
14Co-inventors
52Inventor score
Filing activity: Mar 1, 1984 → Dec 6, 1988
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4590903A | Fuel injection apparatus for definite pilot injection and main injection in internal combustion engines | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US4805580A | Fuel injection device | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4526150A | Fuel injection apparatus for internal combustion engines | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US4526149A | Fuel injection apparatus for internal combustion engines | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US4750462A | Fuel injection apparatus for internal combustion engines | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4535742A | Fuel injection pump for internal combustion engines | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4903666A | Fuel injection device | Emerging Cross-Sectional Technologies | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.