Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889688 | Process of producing nodular cast iron | Fumio Obata, Jun Sakai, Takeshi Natsume | 1989-12-26 |
| 4807728 | Brake member and method of manufacturing same | Fumio Obata | 1989-02-28 |
| 4619713 | Method of producing nodular graphite cast iron | Mitsuru Yano, Yasuoki Ishihara, Kohki Ohtsuka | 1986-10-28 |