Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6486974 | Image reading device | Hiroshi Tanioka, Shinobu Arimoto, Kazuo Yoshinaga, Toshio Hayashi, Tsutomu Utagawa +2 more | 2002-11-26 |
| 6480332 | Diffractive optical element and optical system having the same | — | 2002-11-12 |