Inventor · Stuttgart, DE

Helmut Pfeifle

7Patents
6h-index
14Co-inventors
52Inventor score

Filing activity: Mar 1, 1984 → Dec 6, 1988

Most-cited inventions

PatentTitleAreaCited byStatus
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.