Hirofumi Fujita
40Patents
5h-index
52Co-inventors
72Inventor score
Filing activity: Nov 18, 1998 → Aug 21, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8963501B2 | Voltage equalization device, method, program, and power storage system | Emerging Cross-Sectional Technologies | 34 | Active |
| US6108694A | Memory disk sharing method and its implementing apparatus | Physics | 8 | Expired |
| US8884281B2 | Organic EL element | Electricity | 8 | Active |
| US6557034B1 | Communication control device transmitting data based on internal bus speed of receiving computer | Physics | 6 | Expired |
| US8957412B2 | Organic electroluminescence panel, method of manufacturing organic electroluminescence panel, organic light emitting apparatus using organic electroluminescence panel, and organic display apparatus using organic electroluminescence panel | Electricity | 6 | Active |
| US8829510B2 | Organic electroluminescence display panel and organic electroluminescence display device | Electricity | 5 | Active |
| US8664669B2 | Organic EL element, display apparatus, and light-emitting apparatus | Electricity | 5 | Active |
| US8981361B2 | Organic electroluminescence display panel with tungsten oxide containing hole injection layer that electrically connects electrode to auxiliary wiring, and organic electroluminescence display device | Electricity | 3 | Active |
| US8884276B2 | Organic EL display panel and organic EL display apparatus | Electricity | 3 | Active |
| US8397750B2 | Oil suction device for automatic transmission | Emerging Cross-Sectional Technologies | 3 | Active |
| US8271772B2 | Boot control method of computer system | Physics | 3 | Active |
| US9012897B2 | Organic EL element, display device, and light-emitting device | Electricity | 2 | Active |
| US8745425B2 | Computer system with blade system and management server | Emerging Cross-Sectional Technologies | 2 | Active |
| US7789786B2 | Differential device | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US8653792B2 | Power storage system including a plurality of battery modules and on/off devices or voltage converters | Emerging Cross-Sectional Technologies | 2 | Active |
| US9324964B2 | Organic light-emitting element with hole injection layer having concave portion | Electricity | 1 | Active |
| US10472253B2 | Liquid treatment method and liquid treatment apparatus | Chemistry; Metallurgy | 1 | Active |
| US10816084B2 | Vehicle power transmission device | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US8927976B2 | Organic EL element and production method for same | Electricity | 1 | Active |
| US8703530B2 | Method for producing organic EL element, display device, light-emitting apparatus, and ultraviolet irradiation device | Electricity | 1 | Active |
| US9660213B2 | Organic EL element and manufacturing method thereof, and metal oxide film forming method | Electricity | 1 | Active |
| US9130187B2 | Organic EL element, display device, and light-emitting device | Electricity | 1 | Active |
| US7370744B2 | Friction engagement device of automatic transmission | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US8118705B2 | Vehicle control system and method of controlling vehicle | Emerging Cross-Sectional Technologies | 0 | Active |
| US9490445B2 | Organic el element, organic el panel, organic el light-emitting apparatus, organic el display apparatus, and method of manufacturing organic el element | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.