Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6706961 | Photovoltaic device and process for the production thereof | Koichi Shimizu, Kouji Tsuzuki | 2004-03-16 |
| 6689951 | Photovoltaic element and process for the production thereof | Koichi Shimizu, Koji Tsuzuki | 2004-02-10 |