Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10995817 | Flywheel apparatus | Atsushi Yamazumi, Tsuneo Ukei | 2021-05-04 |
| 10598252 | Damper device | Yuki Ishikawa, Atsushi Yamazumi, Tsuneo Ukei | 2020-03-24 |
| 9638262 | Damper apparatus | Atsushi Yamazumi, Tsuneo Ukei, Masakazu Kamiya | 2017-05-02 |
| 6066380 | Disc medium substrate and disc device | Eiki Oyanagi, Takeshi Sasa, Hiroshi Takino, Teiji Kohara, Masayoshi Oshima | 2000-05-23 |