Hitoshi Kuma
43Patents
12h-index
44Co-inventors
81Inventor score
Filing activity: Oct 30, 2002 → Jun 13, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9153790B2 | Organic electroluminescent device | Electricity | 38 | Active |
| US8476823B2 | Organic electroluminescent device | Electricity | 35 | Active |
| US8883323B2 | Organic electroluminescence device | Emerging Cross-Sectional Technologies | 17 | Active |
| US8461574B2 | Organic electroluminescence device | Electricity | 16 | Active |
| US8710493B2 | Organic electroluminescent element | Electricity | 16 | Active |
| US8803420B2 | Organic electroluminescence device | Electricity | 15 | Active |
| US9095033B2 | Organic electroluminescence element | Electricity | 15 | Active |
| US6844670B2 | Color luminous device | Electricity | 13 | Expired |
| US9812661B2 | Organic electroluminescent device | Electricity | 13 | Active |
| US7358661B2 | Organic electroluminescent device and display | Electricity | 12 | Expired |
| US9324950B2 | Organic electroluminescence device | Electricity | 12 | Active |
| US8723171B2 | Organic electroluminescence device | Electricity | 12 | Active |
| US7583021B2 | Composite emitting device | Electricity | 10 | Active |
| US8076839B2 | Organic electroluminescence device | Electricity | 9 | Active |
| US7928647B2 | Composite emitting device | Electricity | 8 | Active |
| US8106582B2 | Organic electroluminescence display device | Electricity | 8 | Expired |
| US7777413B2 | Organic electroluminescent device having an optical resonator | Electricity | 7 | Active |
| US8987715B2 | Organic electroluminescence element | Emerging Cross-Sectional Technologies | 7 | Active |
| US7737625B2 | Organic electroluminescent device with carrier blocking layer interposed between two emitting layers | Electricity | 7 | Active |
| US7233104B2 | Color emission device | Electricity | 6 | Expired |
| US7550914B2 | Organic electroluminescence display device | Electricity | 6 | Expired |
| US7501189B2 | White organic electroluminescent device | Emerging Cross-Sectional Technologies | 6 | Expired |
| US7923917B2 | Color conversion layer and light-emitting device | Electricity | 5 | Active |
| US9882144B2 | Organic electroluminescent element | Electricity | 5 | Active |
| US10186665B2 | Organic electroluminescent element | Electricity | 4 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.