Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5584914 | Membrane deaerator apparatus | Hitoshi Shiraishi, Norio Yasu, Yasuhiro Kawakami, Yukinori Tobisaka, Yasuo Ochi +6 more | 1996-12-17 |
| 5464329 | Water ring type pump with sidewall water reflux passage | Nobuaki Yanagihara, Norio Yasu | 1995-11-07 |