Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11137081 | Control valve | Masanari Kojima, Takeshi Terao | 2021-10-05 |
| 11047400 | Fluid pressure control device | Masanari Kojima, Takeshi Terao | 2021-06-29 |
| 10954142 | Water cleaning agent and water cleaning method | Ryu Shimada, Takanori Fujita, Kazuhiro Kimura, Masato Hasegawa | 2021-03-23 |
| 10890096 | Internal combustion engine | Yoshifumi Fujita, Tatsunori Kataoka, Takayuki Suzuki, Tomoatsu Oyasu | 2021-01-12 |