Takahiro Kai
47Patents
7h-index
38Co-inventors
65Inventor score
Filing activity: Jan 27, 2005 → Mar 17, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8993129B2 | Fluorescence and delayed fluorescence-type organic light-emitting material and element | Emerging Cross-Sectional Technologies | 181 | Active |
| US7993760B2 | Compound for use in organic electroluminescent device and organic electroluminescent device | Emerging Cross-Sectional Technologies | 174 | Active |
| US9040962B2 | Depositing premixed materials | Electricity | 25 | Active |
| US8062769B2 | Indolocarbazole compound for use in organic electroluminescent device and organic electroluminescent device | Emerging Cross-Sectional Technologies | 23 | Active |
| US8703303B2 | Organic electroluminescent device having a light-emitting layer comprising a host material of two or more compounds | Electricity | 12 | Active |
| US8795848B2 | Indolocarbazole derivative with fused heterocyclic aromatic group for organic electroluminescent device and organic electroluminescent device containing same | Emerging Cross-Sectional Technologies | 11 | Active |
| US8962158B2 | Material having indolocarbazole compound for phosphorescent light-emitting element and organic electroluminescent element using the same | Emerging Cross-Sectional Technologies | 10 | Active |
| US9156843B2 | Organic electroluminescent device comprising an organic layer containing an indolocarbazole compound | Electricity | 7 | Active |
| US8227798B2 | Compound for organic electroluminescent device and organic electroluminescent device | Electricity | 7 | Active |
| US8906521B2 | Organic electroluminescent device having triptycene derivative material | Emerging Cross-Sectional Technologies | 6 | Active |
| US8722208B2 | Organic electroluminescent device | Electricity | 6 | Active |
| US7605277B2 | Aminodibenzodioxin derivative and organic electroluminescent using the same | Electricity | 5 | Expired |
| US9614166B2 | Organic electroluminescent element | Electricity | 3 | Active |
| US8013330B2 | Compound for organic electroluminescent device and organic electroluminescent device | Electricity | 3 | Active |
| US8389131B2 | Material for use in phosphorescent device and organic electroluminescent device using same | Electricity | 3 | Active |
| US9985219B2 | Organic electroluminescent element | Electricity | 2 | Active |
| US9214637B2 | Chalcogen-containing aromatic compound, organic semiconductor material, and organic electronic device | Emerging Cross-Sectional Technologies | 2 | Active |
| US8012606B2 | Heterocyclic compound and organic electroluminescent device using the same | Emerging Cross-Sectional Technologies | 2 | Active |
| US8859109B2 | Compound for organic electroluminescent device and organic electroluminescent device using the same | Emerging Cross-Sectional Technologies | 2 | Active |
| US8008657B2 | Compound for organic electroluminescent device and organic electroluminescent device | Electricity | 2 | Active |
| US9133205B2 | Organic electroluminescent device | Electricity | 1 | Active |
| US9337432B2 | Organic electroluminescent element | Electricity | 1 | Active |
| US9343685B2 | Organic electroluminescent element | Electricity | 1 | Active |
| US9461250B2 | Organic electroluminescent device | Electricity | 1 | Active |
| US8986858B2 | Organic electroluminescent device | Emerging Cross-Sectional Technologies | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.