Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6975385 | Projection optical system and exposure apparatus | Yumiko Ohsaki, Toshihiro Sunaga, Takahiro Sasaki | 2005-12-13 |
| 6922291 | Catoptric projection optical system and exposure apparatus | Toshihiro Sunaga, Takahiro Sasaki | 2005-07-26 |