Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5876523 | Method of producing spheroidal graphite cast iron article | Hideaki Nagayoshi, Seishin UEDA | 1999-03-02 |
| 5346561 | Spheroidal graphite cast iron member having improved mechanical strength hand method of producing same | Fumio Obata, Hisashi Yasuda, Hideaki Nagayoshi, Kiyoshi Suehara, Toshiki Yoshida | 1994-09-13 |