Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9983251 | Grounding monitoring device | — | 2018-05-29 |
| 9948071 | Ionizer with a needle cleaning device | Qinfei Chen, Chee Ming Ng, Kam Poi Chia, John Zenon G Vallinan, Yoshiaki Sato | 2018-04-17 |
| 9588161 | Ionization balance device with shielded capacitor circuit for ion balance measurements and adjustments | — | 2017-03-07 |
| 9404945 | Ionization monitoring device | — | 2016-08-02 |
| 8963552 | Electrostatic discharge event detector | — | 2015-02-24 |
| D688781 | Ionizer | John Zenon G Vallinan, Qin Fei Chen, Chee Ming Ng, Kam Poi Chia, Francisco J. Rodriguez +3 more | 2013-08-27 |