Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6250600 | Bellows-type pressure responsive valve | Kiyoshi Kumagai, Ichiro Ohkawara, Shigeyuki Hidaka | 2001-06-26 |
| 6142445 | Electromagnetic control valve | Masahiro Kawaguchi, Ken Suitou, Hiroyuki Nagai, Masanori Sonobe, Ichiro Ohkawara +1 more | 2000-11-07 |
| 6102668 | Electromagnetic control valve | Masahiro Kawaguchi, Ken Suitou, Masakazu Murase, Atsuyuki Morishita | 2000-08-15 |
| 5588590 | Expansion valve combined with a solenoid valve | Hisayoshi Sakakibara, Tadaaki Ikeda | 1996-12-31 |
| 4622829 | Refrigerating cycle | — | 1986-11-18 |
| 4593535 | Differential pressure valve | Tadaaki Ikeda, Masakazu Kitamura | 1986-06-10 |
| 4541444 | Device for detecting the amount of coins in hopper device | — | 1985-09-17 |
| 4513968 | Device for holding display plate for game machine | — | 1985-04-30 |