Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7775505 | Butterfly valve having improved sealing between a shaft seal part and a valve disc | Yukinobu Sato | 2010-08-17 |
| 7357372 | Seat ring for butterfly valve | Yukitomo Yamamoto | 2008-04-15 |