Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5834649 | Vibration sensor including a movable magnet positioned between stationary magnets | Akihisa Narai, Takeshi Imai, Tsutomu Yamasawa, Tsukasa Hatakenaka, Soichi Okuhara | 1998-11-10 |
| 5650982 | Pulsimeter provided with or without a pedometer | Masaaki Takenaka, Manabu Yoshimura, Tsutomu Yamasawa, Maki Hasegawa, Masatsugu Hirano | 1997-07-22 |
| 5539706 | Pulsimeter provided with or without a pedometer | Masaaki Takenaka, Manabu Yoshimura, Tsutomu Yamasawa, Maki Hasegawa, Masatsugu Hirano | 1996-07-23 |