Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9581056 | Valve seat | Yoshio Koyama, Fusanobu Hanada | 2017-02-28 |
| 9556761 | Valve seat | Yoshio Koyama | 2017-01-31 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9581056 | Valve seat | Yoshio Koyama, Fusanobu Hanada | 2017-02-28 |
| 9556761 | Valve seat | Yoshio Koyama | 2017-01-31 |