Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4432792 | Material for steel wool | Heijiro Kawakami, Sadayoshi Furusawa, Toyofumi Hasegawa, Hitoshi Sato, Katsumasa Tanaka | 1984-02-21 |
| 4431445 | Steel for machine construction having excellent cold forgeability and machinability | Sadayoshi Furusawa, Hideo Takeshita, Tsuyoshi Kohoka, Shuji Iwata | 1984-02-14 |