Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5456115 | Method of counterflow through a pump and method of controlling the operation of a pump in a pumping installation | Takao Kuwabara, Isao Yokoyama, Hiroto Nakagawa, Yasuteru Oono | 1995-10-10 |
| 5090872 | Method of controlling the operation of a pump in a pumping installation by detecting counterflow | Takao Kuwabara, Isao Yokoyama, Hiroto Nakagawa, Yasuteru Oono | 1992-02-25 |