Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889687 | Nodular cast iron having a high impact strength and process of treating the same | Fumio Obato, Jun Sakai, Takeshi Natsume | 1989-12-26 |
| 4619713 | Method of producing nodular graphite cast iron | Makoto Suenaga, Mitsuru Yano, Kohki Ohtsuka | 1986-10-28 |