Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5065061 | EIEC tromagnetic actuator for valve stem | Ikumi Satoh, Jun Nakano, Tatsuhiko Koba | 1991-11-12 |
| 4948091 | Motor-operated valve | Ikumi Satoh, Jun Nakano, Tatsuhiko Koba, Yuichi Fujita, Kazumi Shima | 1990-08-14 |