Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4561889 | Wear-resistant sintered ferrous alloy and method of producing same | Takaaki Oaku, Masahiko Shiota, Yoshihiro Maki | 1985-12-31 |
| 4504312 | Wear-resistant sintered ferrous alloy and method of producing same | Takaaki Oaku, Yoshihiro Maki | 1985-03-12 |