Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5100189 | Structure for absorbing collision impact | Hitoshi Kawatoko | 1992-03-31 |
| 5048345 | Method of determining positions of beads | Ichiro Hagiwara, Masaaki Tsuda, Yuichi Kitagawa | 1991-09-17 |