Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5403545 | Bearing steel | Yatsuka Takata, Akira Muroga, Takao Ooki, Masao Goto, Hazime Tazumi +5 more | 1995-04-04 |
| 4915900 | Free-cutting steel having high fatigue strength | Itie Nomura, Takao Ooki | 1990-04-10 |