Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11549408 | Iron-based sintered alloy valve seat for internal combustion engine | Ayato OIKAWA, Katsuaki Ogawa, Hiroshi Oshige, Kenichi Sato | 2023-01-10 |
| 10287933 | Assembly of internal combustion engine valve and valve seat | Satoshi IKEMI, Hiroshi Oshige, Kenichi Sato, Kouji Kunitake, Ryouichi Yoshino | 2019-05-14 |