Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10584618 | Sintered valve seat | — | 2020-03-10 |
| 10563548 | Sintered valve seat | — | 2020-02-18 |
| 10344636 | Sintered valve seat and its production method | — | 2019-07-09 |
| 9359921 | Sintered iron-based alloy valve seat | Hiroji Henmi | 2016-06-07 |