Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11162454 | Steel piston | Yutaka Neishi, Yorimasa Tsubota, Kouji Oosato, Wataru Nagai, Yoshitomi Yamada | 2021-11-02 |
| 5993571 | Steel for machine structural use and machine parts made from such steel | Hiromasa Takada, Tetsuroh Hashiguchi, Osamu Ohyama | 1999-11-30 |