Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10808865 | Controlling method of driving a vacuum valve | Hideaki Nagai | 2020-10-20 |
| 10746307 | Method of controlling a gate valve | Hideaki Nagai, Katsuyuki Saitoh, Shuichi Araki, Yoshinori Tobita, Mitsuhiro Ikeda | 2020-08-18 |