Issued Patents 2021
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11187326 | Mechanical seal | Osamu Moriya | 2021-11-30 |
| 11143029 | Sealing member | Yuichiro Tokunaga, Masatoshi Itadani | 2021-10-12 |
| 10954790 | Stepped sealing device circumferential pumping groove | Yuichiro Tokunaga, Masatoshi Itadani | 2021-03-23 |