Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4599109 | High hardness and high toughness nitriding powder metallurgical high-speed steel | Nobuyasu Kawai, Minoru Hirano, Hajime Esaka, Hirofumi Fujimoto | 1986-07-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4599109 | High hardness and high toughness nitriding powder metallurgical high-speed steel | Nobuyasu Kawai, Minoru Hirano, Hajime Esaka, Hirofumi Fujimoto | 1986-07-08 |