Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6321590 | Leakage measuring device | — | 2001-11-27 |
| 4351356 | Pressure control valve | Hideshi Koiwai, Haruhiko Kawasaki | 1982-09-28 |
| 4289160 | Pressure control valve | Haruhiko Kawasaki, Hideshi Koiwai | 1981-09-15 |