Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6604423 | Pressure sensor, pressure sensor control apparatus, and pressure sensor system | Kenji Irokawa, Koichi Katsumata | 2003-08-12 |
| D449789 | Signal input and output unit | Ken Gunji, Kenji Irokawa, Koichi Katsumata | 2001-10-30 |