Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12326656 | Mask blank and method of manufacturing photomask | Hitoshi Maeda, Kazuaki Matsui, Naoto YONEMARU | 2025-06-10 |
| 11624979 | Mask blank, transfer mask, and method of manufacturing semiconductor device | Hiroaki Shishido | 2023-04-11 |
| 11314161 | Mask blank, phase shift mask, and method of manufacturing semiconductor device | Hiroaki Shishido | 2022-04-26 |
| 11314162 | Mask blank, transfer mask, and method of manufacturing semiconductor device | Hiroaki Shishido | 2022-04-26 |
| 11022875 | Mask blank, phase shift mask, and method of manufacturing semiconductor device | Hitoshi Maeda, Ryo Ohkubo | 2021-06-01 |