Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6686613 | Punch through type power device | Hidetaka Hattori, Akio Nakagawa | 2004-02-03 |
| 6683343 | High voltage semiconductor device having two buffer layer | Akio Nakagawa | 2004-01-27 |