Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6656612 | Heterocyclic compounds, materials for light emitting devices and light emitting devices using the same | Hisashi Okada | 2003-12-02 |
| 6620529 | Materials for light emitting devices and light emitting devices using the same | Hisashi Okada | 2003-09-16 |