Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11187266 | Double-row self-aligning roller bearing | Kazumasa Seko, Yasuyuki Inoue, Takashi Yamamoto | 2021-11-30 |
| 10883544 | Double-row self-aligning roller bearing and protrusion prevention jig | Kazumasa Seko, Takashi Yamamoto, Yasuyuki Inoue | 2021-01-05 |