Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7955763 | Mask blank glass substrate manufacturing method, mask blank manufacturing method, mask manufacturing method, mask blank glass substrate, mask blank, and mask | Hisashi Kasahara, Yasushi Okubo | 2011-06-07 |