Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4911835 | Seawater-dissolved metal collecting system | Shinichi Ishii, Hitoshi Hotta, Yukihisa Washio | 1990-03-27 |
| 4405866 | Wave-power generator assembly | Yoshio Masuda, Osamu Yamada, Akira Hiramoto | 1983-09-20 |