Issued Patents 2020
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10620527 | Mask blank substrate, substrate with multilayer reflection film, transmissive mask blank, reflective mask blank, transmissive mask, reflective mask, and semiconductor device fabrication method | Kazuhiro Hamamoto, Hirofumi Kozakai, Youichi Usui, Tsutomu Shoki, Junichi Horikawa | 2020-04-14 |