Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6790564 | Photomask and manufacturing method of an electronic device therewith | Sonoko Migitaka, Tadashi Arai, Tsutomu Araki, Osamu Yamaguchi | 2004-09-14 |
| 6432790 | Method of manufacturing photomask, photomask, and method of manufacturing semiconductor integrated circuit device | Yoshihiko Okamoto, Masamichi Kobayashi | 2002-08-13 |