Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12398824 | Valve gear | Takao Harada, Masashi Yamashita, Junya Hayakawa | 2025-08-26 |
| 9194510 | Composite valve | Yusuke Arai, Masashi Yamashita | 2015-11-24 |
| 9140370 | Channel switching valve and heat pump system using the same | Tomoatsu Minamida, Kouji Shibaike | 2015-09-22 |
| 8820356 | Multi-way reversing valve | — | 2014-09-02 |
| 8397757 | Multi-way selector valve | Hitoshi Umezawa | 2013-03-19 |
| 8327883 | Multi-way selector valve | — | 2012-12-11 |