Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5818421 | Input interface apparatus for large screen display | Masanori Ogino, Keiichiro Tanaka, Tetsuo Iwamoto, Hideyuki Fuma | 1998-10-06 |
| 5315395 | Projector with separable projection unit and display body | Mitsuya Nakao, Keiichiro Tanaka, Akio Yamamoto, Tadakazu Matsubara | 1994-05-24 |