Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10465804 | Structure and method for fastening ball seat for ball valve, trunnion ball valve, and hydrogen station using the ball valve | Osamu Watanabe | 2019-11-05 |
| 9032996 | Shaft sealing device and valve structure using the same | Kazuhiro Aoki, Chikashi Gomi | 2015-05-19 |
| 8413953 | Polymer actuator, and valve and shaft-sealing structure each using the same | Kazuhiro Aoki, Chikashi Gomi | 2013-04-09 |