Yosuke Fujii
41Patents
10h-index
49Co-inventors
75Inventor score
Filing activity: Nov 10, 1998 → Mar 12, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6048633A | Fuel cell stack | Emerging Cross-Sectional Technologies | 45 | Expired |
| US6406809B1 | Fuel cell comprising a separator provided with coolant passages | Emerging Cross-Sectional Technologies | 33 | Expired |
| US6416899B1 | Fuel cell stack | Emerging Cross-Sectional Technologies | 22 | Expired |
| US6528196B1 | Fuel cell stack having bent section flow passage grooves | Emerging Cross-Sectional Technologies | 21 | Expired |
| US6926985B2 | Fuel cell stack | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6255011A | Fuel cell stack | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6294280A | Fuel cell stack | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6686085B1 | Fuel cell | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6815107B2 | Gas leak detection method for fuel cell | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6420061B1 | Fuel cell stack | Emerging Cross-Sectional Technologies | 12 | Expired |
| US8750005B2 | Power conversion apparatus | Emerging Cross-Sectional Technologies | 7 | Active |
| US7309539B2 | Fuel cell stack | Emerging Cross-Sectional Technologies | 6 | Expired |
| US8153288B2 | Fuel cell and fuel cell stack | Emerging Cross-Sectional Technologies | 6 | Active |
| US7226688B2 | Fuel cell | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7223490B2 | Fuel cell employing local power generation when starting at low temperature | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6844093B2 | Fuel cell stacking body | Emerging Cross-Sectional Technologies | 4 | Expired |
| US6674264B2 | Cell voltage detector for fuel cell | Emerging Cross-Sectional Technologies | 4 | Expired |
| US7384703B2 | Fuel cell system | Emerging Cross-Sectional Technologies | 4 | Expired |
| US7201990B2 | Fuel cell stack | Emerging Cross-Sectional Technologies | 3 | Expired |
| US10033189B2 | Operation control apparatus for solar power system | Emerging Cross-Sectional Technologies | 3 | Active |
| US7901823B2 | Fuel cell employing cooling liquid passages for starting at low temperature | Emerging Cross-Sectional Technologies | 3 | Active |
| US7090941B2 | Fuel cell stack and a method of supplying reactant gases to the fuel cell stack | Emerging Cross-Sectional Technologies | 2 | Expired |
| US8519656B2 | Synchronous machine starting device | Electricity | 2 | Active |
| US8531144B2 | Synchronous-machine starting device | Electricity | 2 | Active |
| US7981554B2 | Fuel cell system | Emerging Cross-Sectional Technologies | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.