Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4965644 | Pure green light emitting diodes and method of manufacturing the same | Susumu Koike, Toshio Matsuda, Hitoo Iwasa | 1990-10-23 |
| 4671829 | Manufacturing green light emitting diodes | Susumu Koike, Toshio Matsuda, Hitoo Iwasa | 1987-06-09 |