Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11635679 | Alternating phase shift mask | Dan Yu | 2023-04-25 |
| 10859903 | Alternating phase shift mask | Dan Yu | 2020-12-08 |
| 9805756 | Writer pole formation | Yi-Cheng Liu, Dan Yu, Xiaohong Zhang | 2017-10-31 |
| 9482965 | Transmission balancing for phase shift mask with a trim mask | Dan Yu, Yi-Cheng Liu | 2016-11-01 |
| 9411234 | Writer pole formation | Yi-Cheng Liu, Dan Yu, Xiaohong Zhang | 2016-08-09 |
| 9341939 | Transmission balancing for phase shift mask with a trim mask | Dan Yu, Yi-Cheng Liu | 2016-05-17 |