Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855249 | Process for growing III-V compound semiconductors on sapphire using a buffer layer | Isamu Akasaki | 1989-08-08 |
| 4816878 | Negative resistance semiconductor device | Hiroyuki Kano, Masafumi Hashimoto | 1989-03-28 |