Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5639344 | Etching material and etching process | Toshimitsu Konuma, Akira Sugawara | 1997-06-17 |
| 5595638 | Method for manufacturing a semiconductor device utilizing an anodic oxidation | Toshimitsu Konuma, Akira Sugawara | 1997-01-21 |