Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6542292 | Infrared absorption filter | Tetsuo Shimomura, Seiichiro Yokoyama | 2003-04-01 |
| 6522463 | Infrared absorption filter | Tetsuo Shimomura, Masanori Kobayashi, Yozo Yamada, Seiichiro Yokoyama | 2003-02-18 |