Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5520137 | Twin-hull boat with hydrofoils | Toshihiko Arii, Kensaku Takenaka, Masayuki Segawa, Hiromasa Sugimura, Ryohei Takeuchi +3 more | 1996-05-28 |
| 4548154 | Double hulled ship with longitudinal reinforcements | Seiichiro Murata, Toshio Yoshioka, Sakito Kamei, Shin Takeuchi, Yoshiro Yamawaki | 1985-10-22 |