Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6605228 | Method for fabricating planar optical waveguide devices | Shigeru Kawaguchi, Michiya Masuda, Yutaka Natsume | 2003-08-12 |
| 5997829 | Environment purifying material | Yoshika Sekine, Kenji Tonoki, Tatsuya Uchida, Yasuo Miyadera, Hiroyuki Kawada | 1999-12-07 |