Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6858144 | Method and apparatus for treatment of wastewater | Koki NARITA, Hiroyuki Chifuku, Takayoshi Doi, Hiroki Yamaji, Yoshikazu Takai | 2005-02-22 |
| 4943360 | Process for recovering nitric acid and hydrofluoric acid from waste pickle liquors | Takashi Sasaki, Yoshihito Nishimoto | 1990-07-24 |