Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6312857 | Photomask material and method of processing thereof | Kunihiro Nakagawa, Masato Higashiyama, Tosihiko Netsuko, Yoshihiro Kagawa | 2001-11-06 |
| 6303262 | Photomask material, photomask and methods for the production thereof | Kazuchiyo Takaoka, Kenji Hyodo | 2001-10-16 |