Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11174943 | Seal structure | Takahiro Yamamoto, Chao Jing, Akira Ueda, Yuki Noriduki | 2021-11-16 |
| 10948084 | Jig for press-fitting divided sealing ring | — | 2021-03-16 |
| 10907736 | Split seal ring | Akira Ueda, Jyunichi Yamashita, Akihiro Nagano, Katsuhisa Umeda | 2021-02-02 |