Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11073756 | Photomask blank, photomask blank making method, and photomask making method | Takuro Kosaka, Hideo Kaneko, Naoki Kawaura | 2021-07-27 |
| 11061319 | Photomask blank and making method | Takuro Kosaka, Tsuneo Terasawa, Takahiro KISHITA | 2021-07-13 |