Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7217481 | Photomask blank, photomask, methods of manufacturing the same and methods of forming micropattern | Masaru Mitsui, Masao Ushida | 2007-05-15 |
| 6899979 | Photomask blank, photomask, methods of manufacturing the same, and method of forming micropattern | Masaru Mitsui, Masao Ushida | 2005-05-31 |