Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10442715 | Chromium-containing water treatment method | Hiroyuki Mitsui, Osamu Nakai, Keisuke Shibayama | 2019-10-15 |
| 10351929 | Sulfuric acid adding facility and operation method therefor | Takashi Sakamoto, Osamu Nakai, Masayuki Oku, Hideaki Sato | 2019-07-16 |