Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4294697 | Apparatus for treatment of sewage | Toshio Sawa, Masayoshi Kubota, Sankichi Takahashi | 1981-10-13 |
| 4280886 | Method for treatment of sewage | Toshio Sawa, Masayoshi Kubota, Sankichi Takahashi | 1981-07-28 |
| 4205459 | Apparatus for regenerating an adsorbent | Yasuo Koseki, Masayoshi Kubota, Sankichi Takahashi | 1980-06-03 |