Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12379035 | Valve, and method for manufacturing said valve | Tetsuya Watanabe, Mitsuru Hosokawa | 2025-08-05 |
| 12135098 | Valve | Mitsuru Hosokawa, Tetsuya Watanabe, Osamu Watanabe, Hisashi Shimizu | 2024-11-05 |
| D983331 | Fluid control valve | Tetsuya Watanabe, Mitsuru Hosokawa | 2023-04-11 |
| 10767768 | Trunnion-type ball valve, valve seal structure, and valve packing | Masahiro Kazama | 2020-09-08 |
| 10018276 | Trunnion-type ball valve | Masahiro Kazama | 2018-07-10 |