Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6340237 | Lamp cartridge | Ritsuo Koga | 2002-01-22 |
| 6129437 | Image display apparatus | Ritsuo Koga | 2000-10-10 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6340237 | Lamp cartridge | Ritsuo Koga | 2002-01-22 |
| 6129437 | Image display apparatus | Ritsuo Koga | 2000-10-10 |