Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828518 | Double reverse revolution propeller apparatus | Masatoshi Kouda, Hiroshi Takeshita, Katsumi Yonekura, Noboru Tohge, Hiroyuki Hashimoto +4 more | 1989-05-09 |
| 4786264 | Stern tube bearing system of contra-rotating propeller | Sadao Asanabe, Kunio Saki, Susumu Taniguchi, Shozo Morohoshi, Masatoshi Koda | 1988-11-22 |