Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6852429 | Organic electroluminescent device based on pyrene derivatives | Xiao Li, Yoshimasa Okamura, Kazunori Ueno, Hideki Tashiro, G. K. Surya Prakash | 2005-02-08 |
| 5703308 | Karaoke apparatus responsive to oral request of entry songs | Hirokazu Kato | 1997-12-30 |
| 5654516 | Karaoke system having a playback source with pre-stored data and a music synthesizing source with rewriteable data | Youji Semba | 1997-08-05 |
| 5059863 | Organic electroluminescent device | Shuntaro Mataga, Kazufumi Takahashi, Shogo SAITO, Tetsuo Tsutsui, Chihaya Adachi +2 more | 1991-10-22 |