Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849368 | Method of producing a two-dimensional electron gas semiconductor device | Yoshimi Yamashita, Kinjiro Kosemura, Sumio Yamamoto, Shigeru Kuroda | 1989-07-18 |
| 4742379 | HEMT with etch-stop | Yoshimi Yamashita, Kinjiro Kosemura, Sumio Yamamoto, Shigeru Kuroda | 1988-05-03 |