Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6500553 | Substrate having treated surface layers and process for producing it | Takashige Yoneda, Tadashi Hamano | 2002-12-31 |
| 6479157 | Substrate having treated surface layers and process for producing it | Takashige Yoneda, Tadashi Hamano | 2002-11-12 |