Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5262453 | Cushion or trackbed material for use in riding-ground | Yutaka Watanabe, Kazuo Aoyama, Hisanobu Niwata, Katuaki Ishikawa, Yoshiteru Kato | 1993-11-16 |
| 5260384 | Polyethylene composition | Toshifumi Morimoto, Toshiyuki Miyauchi, Kunimichi Kubo, Narumi Ishikawa, Noboru Ikegami | 1993-11-09 |