Issued Patents 2021
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11143029 | Sealing member | Yuichiro Tokunaga, Akira Yoshino | 2021-10-12 |
| 11009130 | Sliding component | Kazumasa Sunagawa, Tetsuzo OKADA, Keiichi Chiba, Kenji Kiryu, Tadahiro Kimura +1 more | 2021-05-18 |
| 10954790 | Stepped sealing device circumferential pumping groove | Yuichiro Tokunaga, Akira Yoshino | 2021-03-23 |