Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7067074 | Near-infrared-absorbing composition and optical material | Tsukasa Ikeda, Hiroki Katono, Katsuichi Machida | 2006-06-27 |
| 7025908 | Optical filter and process for producing the same | Naoki Hayashi, Hiroki Katono, Tomoyoshi Koizumi, Katsuichi Machida | 2006-04-11 |