Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10962142 | Valve stem seal | Takayuki Oyama, Hiroshi Onodera, Masamichi KISHIRO | 2021-03-30 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10962142 | Valve stem seal | Takayuki Oyama, Hiroshi Onodera, Masamichi KISHIRO | 2021-03-30 |