Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6241925 | Method of lining channels | Mitsutoshi Hayashi, Mitsunori Komori, Masato Koseki, Yuichi Banrai, Tomoyuki Minami +4 more | 2001-06-05 |
| 6123027 | Self-propelled vehicle within pipe | Kiichi Suyama, Toshihide Kawabe, Yoshio Ido | 2000-09-26 |