Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4448746 | Process for producing alloy steel powder | Toshihiko Kubo, Minoru Ichidate, Eijiro Tamura, Masahide Umino | 1984-05-15 |
| 4437891 | Oil-atomized low-alloy steel powder | Masahide Umino, Eijiro Tamura, Minoru Ichidate, Toshihiko Kubo | 1984-03-20 |