Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6720090 | Organic light emitting diode devices with improved luminance efficiency | Ralph H. Young, Ching W. Tang | 2004-04-13 |
| 6699595 | Electroluminescent device with polyphenyl hydrocarbon hole transport layer | Shiying Zheng, Ching W. Tang | 2004-03-02 |
| 6680132 | Red organic electroluminescent devices | Kevin P. Klubek | 2004-01-20 |