Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6649125 | Free-cutting steel | Masakazu Hayaishi | 2003-11-18 |
| 6582532 | Steel for large bearing and parts for large bearing | Sadayuki Nakamura, Kiyoyuki Hattori, Katsuhiko Kizawa | 2003-06-24 |