Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6056876 | Method and apparatus for wastewater treatment | Kazuyuki Yamasaki, Atsushi Yokotani, Takamasa Uchiyama | 2000-05-02 |
| 5580458 | Method for waste water treatment using calcium carbonate mineral and microorganisms in combination | Kazuyuki Yamasaki, Yoshihiro Hamaguchi, Shunji Hosoda, Kazuyuki Sakata, Takashi Imai +6 more | 1996-12-03 |
| 5480537 | Apparatus for waste water treatment using calcium carbonate mineral and microorganisms in combination | Kazuyuki Yamasaki, Yoshihiro Hamaguchi, Shunji Hosoda, Kazuyuki Sakata, Takashi Imai +6 more | 1996-01-02 |
| 5423988 | Method and apparatus for treating developer-containing waste water at multiple biological treatment stages | Kazuyuki Yamasaki, Yoshihiro Hamaguchi, Shunji Hosoda, Kazuyuki Sakata, Takamasa Uchiyama | 1995-06-13 |