Kumi Kojima
20Patents
8h-index
11Co-inventors
68Inventor score
Filing activity: May 2, 2005 → Jun 14, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7649197B2 | Composite material, and light emitting element and light emitting device using the composite material | Chemistry; Metallurgy | 35 | Active |
| US8039122B2 | Anthracene derivative, material for light emitting element, light emitting element, light emitting device, and electronic device | Emerging Cross-Sectional Technologies | 28 | Active |
| US7838128B2 | Carbazole derivative, and light emitting element material, light emitting element, and electronic appliance obtained using the same | Electricity | 22 | Active |
| US8298687B2 | Anthracene derivative, material for light emitting element, light emitting element, light emitting device, and electronic device | Emerging Cross-Sectional Technologies | 20 | Active |
| US7879464B2 | Anthracene derivative, material for light emitting element, light emitting element, light emitting device, and electronic appliance | Electricity | 18 | Active |
| US7646010B2 | Light-emitting element, light-emitting device, and electronic device | Electricity | 16 | Active |
| US8405070B2 | Composite material, and light emitting element and light emitting device using the composite material | Chemistry; Metallurgy | 12 | Active |
| US8603647B2 | Anthracene derivative, material for light emitting element, light emitting element, light emitting device, and electronic device | Emerging Cross-Sectional Technologies | 9 | Active |
| US7796240B2 | Evaluation method and manufacturing method of light-emitting element material, manufacturing method of light-emitting element, and light-emitting device and electric appliance having light-emitting element | Physics | 8 | Active |
| US8815410B2 | Anthracene derivative, light emitting element using the same, and light emitting device using the same | Electricity | 7 | Active |
| US7732064B2 | Anthracene derivative, and light-emitting element, light-emitting device, and electronic appliance using the same | Electricity | 6 | Active |
| US8686628B2 | Anthracene derivative | Electricity | 5 | Active |
| US7541099B2 | Anthracene derivative and light emitting element and light emitting device using the same | Emerging Cross-Sectional Technologies | 4 | Active |
| US8659008B2 | Composite material and light emitting element, light emitting device, and electronic device using the composite material | Electricity | 3 | Active |
| US7505122B2 | Evaluation method and manufacturing method of light-emitting element material, manufacturing method of light-emitting element, light-emitting element, and light-emitting device and electric appliance having light-emitting element | Physics | 1 | Active |
| US7914911B2 | Anthracene derivative and light emitting element and light emitting device using the same | Emerging Cross-Sectional Technologies | 1 | Active |
| US10326078B2 | Anthracene derivative, light-emitting element using the same, and light-emitting device using the same | Electricity | 0 | Active |
| US11296280B2 | Anthracene derivative, light emitting element using the same, and light emitting device using the same | Electricity | 0 | Active |
| US9478751B2 | Anthracene derivative, light emitting element using the same, and light emitting device using the same | Electricity | 0 | Active |
| US9219235B2 | Anthracene derivative, light emitting element using the same, and light emitting device using the same | General | 0 | Revoked |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.