Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7285229 | Etchant and replenishment solution therefor, and etching method and method for producing wiring board using the same | Ryo Ogushi, Daisaku Akiyama, Kaoru Urushibata | 2007-10-23 |
| 6426020 | Etchant for copper or copper alloys | Masao Okada, Maki Arimura | 2002-07-30 |