Issued Patents 2019
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10520085 | Combined oil ring | Kenji Arai, Ryosuke Kamata, Hideshi Hitosugi, Kazumoto Takahashi, Toru Tsukui | 2019-12-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10520085 | Combined oil ring | Kenji Arai, Ryosuke Kamata, Hideshi Hitosugi, Kazumoto Takahashi, Toru Tsukui | 2019-12-31 |