Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5918627 | Safety valve | — | 1999-07-06 |
| 5884984 | Hydraulic braking apparatus having two safety valves | Mitsuru Arai, Seita Hayashi, Hideki Kado, Sadao Nunotani | 1999-03-23 |
| 5826488 | Swash plate angle changing apparatus for a piston pump/motor of swash plate type | Mitsuru Arai, Hideki Kado, Sadao Nunotani, Koichi Morita, Seita Hayashi | 1998-10-27 |