Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4340485 | Countercurrent liquid-solid contacting apparatus | Yasuhiro Tsujimoto | 1982-07-20 |
| 4257896 | Countercurrent liquid-solid contacting apparatus | Akira Nakatani, Yasuhiro Tsujimoto | 1981-03-24 |
| 4229292 | Countercurrent liquid-solid contacting apparatus | Shoichi Mori, Kikuo Nishikawa | 1980-10-21 |