Kazuhito Hatoh
81Patents
17h-index
76Co-inventors
87Inventor score
Filing activity: Dec 27, 1988 → May 3, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5976725A | Fuel cell system, fuel feed system for fuel cell and portable electric appliance | Emerging Cross-Sectional Technologies | 78 | Expired |
| US5470670A | Fuel cell | Emerging Cross-Sectional Technologies | 61 | Expired |
| US6840969B2 | High polymer electrolyte fuel cell and electrolyte film-gasket assembly for the fuel cell | Emerging Cross-Sectional Technologies | 53 | Expired |
| US5348814A | Internal reforming type molten carbonate fuel cell | Emerging Cross-Sectional Technologies | 50 | Expired |
| US5702838A | Fuel cell device equipped with catalyst material for removing carbon monoxide and method for removing carbon monoxide | Emerging Cross-Sectional Technologies | 47 | Expired |
| US5962155A | Fuel cell system | Emerging Cross-Sectional Technologies | 42 | Expired |
| US6660419B1 | Solid polymer electrolyte fuel cell | Emerging Cross-Sectional Technologies | 26 | Expired |
| US6884536B1 | Polymer electrolyte fuel cell | Emerging Cross-Sectional Technologies | 24 | Expired |
| US5387330A | Mixed ionic conductors | Emerging Cross-Sectional Technologies | 23 | Expired |
| US6531236B1 | Polymer electrolyte fuel cell stack | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5244753A | Solid electrolyte fuel cell and method for manufacture of same | Emerging Cross-Sectional Technologies | 20 | Expired |
| US6372373B1 | Solid polymer electrolyte fuel cell and method for producing the same | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6855178B2 | Method for producing film electrode jointed product and method for producing solid polymer type fuel cell | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6329093A | Polymer electrolyte fuel cell stack | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6921598B2 | Polymer electrolyte fuel cell and method of manufacturing the same | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6210823A | Polymer electrolyte fuel cell | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6117579A | Polymer electrolyte fuel cell | Emerging Cross-Sectional Technologies | 17 | Expired |
| US7005205B1 | Polymer electrolyte fuel cell | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6893765B1 | Polymer electrolyte fuel cell | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6187464A | Method for activating fuel cell | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6746793B1 | Polymer electrolyte fuel cell | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5589287A | Molten carbonate fuel cell | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6689504B1 | Fuel cell stack with separator of a laminate structure | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5314508A | Solid electrolyte fuel cell and method for manufacture of same | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5354627A | Molten carbonate fuel cell | Emerging Cross-Sectional Technologies | 10 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.