Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6666987 | Liquid etchant and method for roughening copper surface | Yoshihiko Morikawa, Nobuhiro Yamazaki | 2003-12-23 |
| 6544436 | Etchant, method for roughening copper surface and method for producing printed wiring board | Yoshihiko Morikawa, Nobuhiro Yamazaki | 2003-04-08 |