Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837108 | Austenitic free cutting stainless steels | Noriyoshi Shibata | 1989-06-06 |
| 4810465 | Free-cutting Ti alloy | Sadayuki Nakamura | 1989-03-07 |
| 4806304 | Free cutting steel | Sadayuki Nakamura, Makoto Saito | 1989-02-21 |