Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10571797 | Mask blank, transfer mask, method for manufacturing transfer mask, and method for manufacturing semiconductor device | Osamu Nozawa, Hiroaki Shishido | 2020-02-25 |
| 10527931 | Mask blank, transfer mask, method for manufacturing transfer mask, and method for manufacturing semiconductor device | Osamu Nozawa, Hiroaki Shishido, Yasushi Okubo | 2020-01-07 |