Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5427977 | Method for manufacturing porous semiconductor light emitting device | Masao Yamada, Motoo Nakano, George J. Collins, Tetsuro Tamura | 1995-06-27 |
| 5331180 | Porous semiconductor light emitting device | Masao Yamada, Motoo Nakano, George J. Collins, Tetsuro Tamura | 1994-07-19 |