Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9552968 | Plasma cleaning apparatus and method | Matt Cheng-Hsiung Tsai, Nan Lu, David T. Or, Mei Chang | 2017-01-24 |
| 8721796 | Plasma cleaning apparatus and method | Matt Cheng-Hsiung Tsai, Nan Lu, David T. Or, Mei Chang | 2014-05-13 |