Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5647988 | Method of back-washing submerged-type ceramic membrane separation apparatus | Toshio Kawanishi, Shigeki Yokoyama, Yoshihisa Narukami, Masahiko Shioyama, Mikiharu Tokushima +1 more | 1997-07-15 |
| 4845819 | Method for coupling two plastic constructive parts used in valve, joint and pipe devices | Junsuke Kyomen, Masayuki Sakaguchi, Hideki Kajiwara, Keiji Matsumoto, Kenzo Nishitani +2 more | 1989-07-11 |