Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12308560 | Hermetic terminal and tank valve device including same | Masayoshi Okamoto, Michihiko Tokuda, Makoto Ninomiya | 2025-05-20 |
| 11898650 | Pressure-reducing valve, valve unit, valve device, and leaf spring | Masayoshi Okamoto, Masataka HIGASHIURA, Masataka SHIRASAWA, Tsutomu Tomita, Shigeyoshi Mori | 2024-02-13 |
| 10161360 | Valve device | Makoto Ninomiya, Masayoshi Okamoto, Katsu YOSHIDA | 2018-12-25 |
| 8594270 | Display panel drive device | Tetsu Nagano, Daijiro Arisawa, Kenichi Ishibashi | 2013-11-26 |