Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5804102 | Plasma display filter | Ryu Oi, Kazuhiro Seino, Yoriaki Matsuzaki, Keisuke Takuma, Shin Fukuda +1 more | 1998-09-08 |
| 5788914 | Near infrared ray absorbing compound having high durability and its use | Ryu Oi, Kazuhiro Seino, Keisuke Takuma | 1998-08-04 |