Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6465610 | Method and apparatus for manufacturing plastic optical element and plastic optical element | Yasuo Yamanaka, Jun Watanabe, Kiyotaka Sawada, Toshiharu Hatakeyama | 2002-10-15 |