Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7163192 | Actuator for valve | Kazuhiro Aoki, Yoshikazu Yokochi, Masahiro Kazama | 2007-01-16 |
| 4765592 | Material for valve seats | — | 1988-08-23 |
| 4260883 | Optical measurement system | Seiichi Onoda, Shoji Yamada, Minoru Maeda, Shin Kita, Mitsuo Tanaka | 1981-04-07 |