Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5657336 | Semiconductor light-emitting device | Hiroyuki Okuyama, Akira Ishibashi, Eisaku Kato, Hiroshi Yoshida, Kazushi Nakano +2 more | 1997-08-12 |
| 5617446 | Surface-emitting semiconductor light emitting device | Akira Ishibashi, Norikazu Nakayama | 1997-04-01 |