Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8257675 | Artificial quartz member, process for producing the same, and optical element comprising the same | Shinya Kikugawa, Yutaka Shimizu, Kazumi Yoshida, Masatoshi Nishimoto | 2012-09-04 |
| 7514382 | Synthetic quartz glass for optical member and its production method | Yoshiaki Ikuta | 2009-04-07 |
| 7368403 | Synthetic quartz glass for optical member, projection exposure apparatus and projection exposure method | Yoshiaki Ikuta | 2008-05-06 |