Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6053991 | Production of cold working tool steel | Daien Yokoi | 2000-04-25 |
| 4917961 | Method of producing corrosion-, heat- and wear-resistant member, and the member produced | Genryu Abe, Akira Yamaguchi, Minoru Mishuku, Nobujiro Tsuchiya | 1990-04-17 |