Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6033571 | Activated sludge treatment method and apparatus | Susumu Hasegawa, Masahiko Miura, Kenji Katsura, Hideki Yokoyama | 2000-03-07 |
| 5484512 | Methods and apparatuses for producing high purity oxygen and hydrogen | Takashi Sasaki, Hiroyuki Harada | 1996-01-16 |
| 5143275 | Method for repairing a glass layer of glass-lined equipment | Tatsuo Hara, Shigeo Uegaki | 1992-09-01 |
| 5139623 | Method of forming oxide film on stainless steel | Tadahiro Ohmi, Kenichi Ushikoshi, Masao Saito | 1992-08-18 |
| 5124033 | Ultrapure water producing system | Tadahiro Ohmi, Kenichi Ushikoshi, Masao Saito | 1992-06-23 |