Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4432792 | Material for steel wool | Heijiro Kawakami, Sadayoshi Furusawa, Toyofumi Hasegawa, Hitoshi Sato, Jiro Koarai | 1984-02-21 |
| 4402757 | Method of vibrating coiled wires | Heijiro Kawakami, Seiichi Kamamoto, Kazuo Sato | 1983-09-06 |