Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6919120 | Plastic molding and a method and a mold assembly for producing the same | Yasuo Yamanaka, Jun Watanabe, Kiyotaka Sawada, Toshiharu Hatakeyama | 2005-07-19 |
| 6875380 | Method and apparatus for manufacturing plastic optical element and plastic optical element | Yasuo Yamanaka, Jun Watanabe, Kiyotaka Sawada, Toshiharu Hatakeyama | 2005-04-05 |